22221212200002 has 24 divisors (see below), whose sum is σ = 48147021112320. Its totient is φ = 7406907449400.

The previous prime is 22221212199947. The next prime is 22221212200051. The reversal of 22221212200002 is 20000221212222.

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, 12766374 + ... + 14402177.

It is an arithmetic number, because the mean of its divisors is an integer number (2006125879680).

Almost surely, 2^{22221212200002} is an apocalyptic number.

22221212200002 is an abundant number, since it is smaller than the sum of its proper divisors (25925808912318).

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

22221212200002 is a wasteful number, since it uses less digits than its factorization.

22221212200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27213998 (or 27213995 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22221212200002 its reverse (20000221212222), we get a palindrome (42221433412224).

The spelling of 22221212200002 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twelve million, two hundred thousand, two".