20121121112022 has 48 divisors (see below), whose sum is σ = 49852248605952. Its totient is φ = 5745600961200.

The previous prime is 20121121112003. The next prime is 20121121112089. The reversal of 20121121112022 is 22021112112102.

20121121112022 is a `hidden beast` number, since 201 + 211 + 211 + 1 + 20 + 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 = 20121121111986 and 20121121112004.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 45484354 + ... + 45924597.

It is an arithmetic number, because the mean of its divisors is an integer number (1038588512624).

Almost surely, 2^{20121121112022} is an apocalyptic number.

20121121112022 is an abundant number, since it is smaller than the sum of its proper divisors (29731127493930).

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

20121121112022 is a wasteful number, since it uses less digits than its factorization.

20121121112022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91410713 (or 91410710 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20121121112022 its reverse (22021112112102), we get a palindrome (42142233224124).

The spelling of 20121121112022 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, twenty-two".