22221200022002 has 4 divisors (see below), whose sum is σ = 33331800033006. Its totient is φ = 11110600011000.

The previous prime is 22221200021971. The next prime is 22221200022011. The reversal of 22221200022002 is 20022000212222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14774037377401 + 7447162644601 = 3843701^2 + 2728949^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555300005499 + ... + 5555300005502.

Almost surely, 2^{22221200022002} is an apocalyptic number.

22221200022002 is a deficient number, since it is larger than the sum of its proper divisors (11110600011004).

22221200022002 is a wasteful number, since it uses less digits than its factorization.

22221200022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110600011003.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22221200022002 its reverse (20022000212222), we get a palindrome (42243200234224).

The spelling of 22221200022002 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred million, twenty-two thousand, two".