13000012121232 has 160 divisors (see below), whose sum is σ = 37560528512000. Its totient is φ = 4304818732032.

The previous prime is 13000012121197. The next prime is 13000012121249. The reversal of 13000012121232 is 23212121000031.

13000012121232 is a `hidden beast` number, since 1 + 300 + 0 + 0 + 12 + 121 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366706644 + ... + 366742092.

It is an arithmetic number, because the mean of its divisors is an integer number (234753303200).

Almost surely, 2^{13000012121232} is an apocalyptic number.

13000012121232 is a gapful number since it is divisible by the number (12) 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 13000012121232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18780264256000).

13000012121232 is an abundant number, since it is smaller than the sum of its proper divisors (24560516390768).

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

13000012121232 is a wasteful number, since it uses less digits than its factorization.

13000012121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41030 (or 41018 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13000012121232 its reverse (23212121000031), we get a palindrome (36212133121263).

The spelling of 13000012121232 in words is "thirteen trillion, twelve million, one hundred twenty-one thousand, two hundred thirty-two".