20121312023022 has 48 divisors (see below), whose sum is σ = 46814016005712. Its totient is φ = 5748802899840.

The previous prime is 20121312023017. The next prime is 20121312023041. The reversal of 20121312023022 is 22032021312102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 20121312023022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11244828 + ... + 12910800.

It is an arithmetic number, because the mean of its divisors is an integer number (975292000119).

Almost surely, 2^{20121312023022} is an apocalyptic number.

20121312023022 is an abundant number, since it is smaller than the sum of its proper divisors (26692703982690).

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

20121312023022 is a wasteful number, since it uses less digits than its factorization.

20121312023022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707073 (or 1707066 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20121312023022 its reverse (22032021312102), we get a palindrome (42153333335124).

The spelling of 20121312023022 in words is "twenty trillion, one hundred twenty-one billion, three hundred twelve million, twenty-three thousand, twenty-two".