20121121121022 has 64 divisors (see below), whose sum is σ = 44852496691200. Its totient is φ = 6686209696320.

The previous prime is 20121121120999. The next prime is 20121121121039. The reversal of 20121121121022 is 22012112112102.

20121121121022 is a `hidden beast` number, since 201 + 21 + 1 + 211 + 210 + 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 = 20121121120986 and 20121121121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245887458 + ... + 245969274.

It is an arithmetic number, because the mean of its divisors is an integer number (700820260800).

Almost surely, 2^{20121121121022} is an apocalyptic number.

20121121121022 is an abundant number, since it is smaller than the sum of its proper divisors (24731375570178).

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

20121121121022 is a wasteful number, since it uses less digits than its factorization.

20121121121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95918 (or 95912 counting only the distinct ones).

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

Adding to 20121121121022 its reverse (22012112112102), we get a palindrome (42133233233124).

It can be divided in two parts, 2012112112102 and 2, that multiplied together give a palindrome (4024224224204).

The spelling of 20121121121022 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, twenty-two".