22221221102002 has 16 divisors (see below), whose sum is σ = 36213480820440. Its totient is φ = 10165187596032.

The previous prime is 22221221101991. The next prime is 22221221102011. The reversal of 22221221102002 is 20020112212222.

It can be written as a sum of positive squares in 4 ways, for example, as 12270861874441 + 9950359227561 = 3502979^2 + 3154419^2 .

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, 3781688877 + ... + 3781694752.

Almost surely, 2^{22221221102002} is an apocalyptic number.

22221221102002 is a deficient number, since it is larger than the sum of its proper divisors (13992259718438).

22221221102002 is a wasteful number, since it uses less digits than its factorization.

22221221102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7563383757.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22221221102002 its reverse (20020112212222), we get a palindrome (42241333314224).

The spelling of 22221221102002 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred two thousand, two".