2122211221002 has 24 divisors (see below), whose sum is σ = 4605275385984. Its totient is φ = 706303575144.

The previous prime is 2122211220989. The next prime is 2122211221019. The reversal of 2122211221002 is 2001221122212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91668538 + ... + 91691685.

It is an arithmetic number, because the mean of its divisors is an integer number (191886474416).

Almost surely, 2^{2122211221002} is an apocalyptic number.

2122211221002 is an abundant number, since it is smaller than the sum of its proper divisors (2483064164982).

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

2122211221002 is a wasteful number, since it uses less digits than its factorization.

2122211221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183360874 (or 183360871 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2122211221002 its reverse (2001221122212), we get a palindrome (4123432343214).

The spelling of 2122211221002 in words is "two trillion, one hundred twenty-two billion, two hundred eleven million, two hundred twenty-one thousand, two".