22121200012002 has 64 divisors (see below), whose sum is σ = 54452771493120. Its totient is φ = 5834099764224.

The previous prime is 22121200011973. The next prime is 22121200012057. The reversal of 22121200012002 is 20021000212122.

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, 72886438 + ... + 73189310.

It is an arithmetic number, because the mean of its divisors is an integer number (850824554580).

Almost surely, 2^{22121200012002} is an apocalyptic number.

22121200012002 is an abundant number, since it is smaller than the sum of its proper divisors (32331571481118).

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

22121200012002 is a wasteful number, since it uses less digits than its factorization.

22121200012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436667.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22121200012002 its reverse (20021000212122), we get a palindrome (42142200224124).

The spelling of 22121200012002 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred million, twelve thousand, two".