22221121002 has 16 divisors (see below), whose sum is σ = 45280775520. Its totient is φ = 7267284752.

The previous prime is 22221120983. The next prime is 22221121033. The reversal of 22221121002 is 20012112222.

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, 34938552 + ... + 34939187.

It is an arithmetic number, because the mean of its divisors is an integer number (2830048470).

Almost surely, 2^22221121002 is an apocalyptic number.

22221121002 is an abundant number, since it is smaller than the sum of its proper divisors (23059654518).

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

22221121002 is a wasteful number, since it uses less digits than its factorization.

22221121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69877797.

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

Adding to 22221121002 its reverse (20012112222), we get a palindrome (42233233224).

The spelling of 22221121002 in words is "twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, two".