2121200000022 has 16 divisors (see below), whose sum is σ = 4243963762800. Its totient is φ = 706806039552.

The previous prime is 2121199999957. The next prime is 2121200000093. The reversal of 2121200000022 is 2200000021212.

It is a junction number, because it is equal to n+sod(n) for n = 2121199999953 and 2121200000007.

It is a congruent number.

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, 65139147 + ... + 65171702.

It is an arithmetic number, because the mean of its divisors is an integer number (265247735175).

Almost surely, 2^{2121200000022} is an apocalyptic number.

2121200000022 is an abundant number, since it is smaller than the sum of its proper divisors (2122763762778).

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

2121200000022 is a wasteful number, since it uses less digits than its factorization.

2121200000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130313567.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2121200000022 its reverse (2200000021212), we get a palindrome (4321200021234).

The spelling of 2121200000022 in words is "two trillion, one hundred twenty-one billion, two hundred million, twenty-two", and thus it is an aban number.