20011201022120 has 256 divisors, whose sum is σ = 57890839449600. Its totient is φ = 6045177600000.

The previous prime is 20011201022053. The next prime is 20011201022123. The reversal of 20011201022120 is 2122010211002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20011201022095 and 20011201022104.

It is not an unprimeable number, because it can be changed into a prime (20011201022123) 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, 12126620 + ... + 13677620.

It is an arithmetic number, because the mean of its divisors is an integer number (226136091600).

Almost surely, 2^{20011201022120} is an apocalyptic number.

20011201022120 is a gapful number since it is divisible by the number (20) 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 20011201022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28945419724800).

20011201022120 is an abundant number, since it is smaller than the sum of its proper divisors (37879638427480).

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

20011201022120 is a wasteful number, since it uses less digits than its factorization.

20011201022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551160 (or 1551156 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20011201022120 its reverse (2122010211002), we get a palindrome (22133211233122).

The spelling of 20011201022120 in words is "twenty trillion, eleven billion, two hundred one million, twenty-two thousand, one hundred twenty".