20110121111112 has 32 divisors (see below), whose sum is σ = 50278451254080. Its totient is φ = 6702953906880.

The previous prime is 20110121111077. The next prime is 20110121111123. The reversal of 20110121111112 is 21111112101102.

It is a super-2 number, since 2×20110121111112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20110121111091 and 20110121111100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25845964 + ... + 26612667.

It is an arithmetic number, because the mean of its divisors is an integer number (1571201601690).

Almost surely, 2^{20110121111112} is an apocalyptic number.

It is an amenable number.

20110121111112 is an abundant number, since it is smaller than the sum of its proper divisors (30168330142968).

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

20110121111112 is a wasteful number, since it uses less digits than its factorization.

20110121111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52474613 (or 52474609 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 20110121111112 its reverse (21111112101102), we get a palindrome (41221233212214).

The spelling of 20110121111112 in words is "twenty trillion, one hundred ten billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twelve".