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13200031212000 = 253539726942157
BaseRepresentation
bin1100000000010101111100…
…1010111110000111100000
31201201220120212111221120220
43000011133022332013200
53212232130442241000
644024002143403040
72531446036012443
oct300053712760740
951656525457526
1013200031212000
11422a113549a36
1215923078b3480
137499b05b5119
14338c5630d65a
1517d56a7241a0
hexc015f2be1e0

13200031212000 has 384 divisors, whose sum is σ = 43852562732160. Its totient is φ = 3470686617600.

The previous prime is 13200031211993. The next prime is 13200031212007. The reversal of 13200031212000 is 21213000231.

It is an interprime number because it is at equal distance from previous prime (13200031211993) and next prime (13200031212007).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13200031212007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 313094922 + ... + 313137078.

It is an arithmetic number, because the mean of its divisors is an integer number (114199382115).

Almost surely, 213200031212000 is an apocalyptic number.

13200031212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13200031212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21926281366080).

13200031212000 is an abundant number, since it is smaller than the sum of its proper divisors (30652531520160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13200031212000 is a wasteful number, since it uses less digits than its factorization.

13200031212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42551 (or 42533 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 13200031212000 its reverse (21213000231), we get a palindrome (13221244212231).

The spelling of 13200031212000 in words is "thirteen trillion, two hundred billion, thirty-one million, two hundred twelve thousand".