2021112012122 has 16 divisors (see below), whose sum is σ = 3506507589312. Its totient is φ = 855754827360.

The previous prime is 2021112012103. The next prime is 2021112012209. The reversal of 2021112012122 is 2212102111202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021112012122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869668379 + ... + 869670702.

It is an arithmetic number, because the mean of its divisors is an integer number (219156724332).

Almost surely, 2^{2021112012122} is an apocalyptic number.

2021112012122 is a deficient number, since it is larger than the sum of its proper divisors (1485395577190).

2021112012122 is a wasteful number, since it uses less digits than its factorization.

2021112012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739339173.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2021112012122 its reverse (2212102111202), we get a palindrome (4233214123324).

The spelling of 2021112012122 in words is "two trillion, twenty-one billion, one hundred twelve million, twelve thousand, one hundred twenty-two".