20122111100112 has 80 divisors (see below), whose sum is σ = 59489186198400. Its totient is φ = 5741331181056.

The previous prime is 20122111100101. The next prime is 20122111100123. The reversal of 20122111100112 is 21100111122102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20122111100101) and next prime (20122111100123).

It is a junction number, because it is equal to n+sod(n) for n = 20122111100091 and 20122111100100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40604487 + ... + 41097062.

It is an arithmetic number, because the mean of its divisors is an integer number (743614827480).

Almost surely, 2^{20122111100112} is an apocalyptic number.

It is an amenable number.

20122111100112 is an abundant number, since it is smaller than the sum of its proper divisors (39367075098288).

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

20122111100112 is a wasteful number, since it uses less digits than its factorization.

20122111100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81702300 (or 81702294 counting only the distinct ones).

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

Adding to 20122111100112 its reverse (21100111122102), we get a palindrome (41222222222214).

The spelling of 20122111100112 in words is "twenty trillion, one hundred twenty-two billion, one hundred eleven million, one hundred thousand, one hundred twelve".