20110122021012 has 48 divisors (see below), whose sum is σ = 47985452192832. Its totient is φ = 6553031777280.

The previous prime is 20110122020971. The next prime is 20110122021053. The reversal of 20110122021012 is 21012022101102.

It is an interprime number because it is at equal distance from previous prime (20110122020971) and next prime (20110122021053).

It is a junction number, because it is equal to n+sod(n) for n = 20110122020982 and 20110122021000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84153213 + ... + 84391844.

It is an arithmetic number, because the mean of its divisors is an integer number (999696920684).

Almost surely, 2^{20110122021012} is an apocalyptic number.

It is an amenable number.

20110122021012 is an abundant number, since it is smaller than the sum of its proper divisors (27875330171820).

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

20110122021012 is a wasteful number, since it uses less digits than its factorization.

20110122021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168545288 (or 168545286 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20110122021012 its reverse (21012022101102), we get a palindrome (41122144122114).

The spelling of 20110122021012 in words is "twenty trillion, one hundred ten billion, one hundred twenty-two million, twenty-one thousand, twelve".