22221212221002 has 32 divisors (see below), whose sum is σ = 44766068981760. Its totient is φ = 7353315030960.

The previous prime is 22221212220979. The next prime is 22221212221057. The reversal of 22221212221002 is 20012221212222.

It is a self number, because there is not a number n which added to its sum of digits gives 22221212221002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22650274 + ... + 23610957.

It is an arithmetic number, because the mean of its divisors is an integer number (1398939655680).

Almost surely, 2^{22221212221002} is an apocalyptic number.

22221212221002 is an abundant number, since it is smaller than the sum of its proper divisors (22544856760758).

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

22221212221002 is a wasteful number, since it uses less digits than its factorization.

22221212221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46261818.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22221212221002 its reverse (20012221212222), we get a palindrome (42233433433224).

The spelling of 22221212221002 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twelve million, two hundred twenty-one thousand, two".