20100231121120 has 48 divisors (see below), whose sum is σ = 48770222957568. Its totient is φ = 7822792650240.

The previous prime is 20100231121111. The next prime is 20100231121141. The reversal of 20100231121120 is 2112113200102.

It is a super-2 number, since 2×20100231121120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20100231121094 and 20100231121103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1697648736 + ... + 1697660575.

It is an arithmetic number, because the mean of its divisors is an integer number (1016046311616).

Almost surely, 2^{20100231121120} is an apocalyptic number.

20100231121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100231121120 is an abundant number, since it is smaller than the sum of its proper divisors (28669991836448).

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

20100231121120 is a wasteful number, since it uses less digits than its factorization.

20100231121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395309363 (or 3395309355 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20100231121120 its reverse (2112113200102), we get a palindrome (22212344321222).

The spelling of 20100231121120 in words is "twenty trillion, one hundred billion, two hundred thirty-one million, one hundred twenty-one thousand, one hundred twenty".