20110122111012 has 24 divisors (see below), whose sum is σ = 46933005000000. Its totient is φ = 6702033074016.

The previous prime is 20110122110999. The next prime is 20110122111031. The reversal of 20110122111012 is 21011122101102.

It is a happy number.

It is a super-2 number, since 2×20110122111012² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20110122110982 and 20110122111000.

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, 167557887 + ... + 167677862.

It is an arithmetic number, because the mean of its divisors is an integer number (1955541875000).

Almost surely, 2^{20110122111012} is an apocalyptic number.

It is an amenable number.

20110122111012 is an abundant number, since it is smaller than the sum of its proper divisors (26822882888988).

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

20110122111012 is a wasteful number, since it uses less digits than its factorization.

20110122111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335240755 (or 335240753 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20110122111012 its reverse (21011122101102), we get a palindrome (41121244212114).

The spelling of 20110122111012 in words is "twenty trillion, one hundred ten billion, one hundred twenty-two million, one hundred eleven thousand, twelve".