20112111121122 has 80 divisors (see below), whose sum is σ = 47719646156160. Its totient is φ = 6309327987072.

The previous prime is 20112111121087. The next prime is 20112111121127. The reversal of 20112111121122 is 22112111121102.

It is a happy number.

20112111121122 is a `hidden beast` number, since 201 + 121 + 111 + 211 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20112111121095 and 20112111121104.

It is not an unprimeable number, because it can be changed into a prime (20112111121127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 51246483 + ... + 51637449.

It is an arithmetic number, because the mean of its divisors is an integer number (596495576952).

Almost surely, 2^{20112111121122} is an apocalyptic number.

20112111121122 is an abundant number, since it is smaller than the sum of its proper divisors (27607535035038).

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

20112111121122 is a wasteful number, since it uses less digits than its factorization.

20112111121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409677 (or 409668 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 20112111121122 its reverse (22112111121102), we get a palindrome (42224222242224).

The spelling of 20112111121122 in words is "twenty trillion, one hundred twelve billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twenty-two".