21222022002 has 16 divisors (see below), whose sum is σ = 42704438880. Its totient is φ = 7030608192.

The previous prime is 21222021979. The next prime is 21222022021. The reversal of 21222022002 is 20022022212.

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, 10848727 + ... + 10850682.

It is an arithmetic number, because the mean of its divisors is an integer number (2669027430).

Almost surely, 2^21222022002 is an apocalyptic number.

21222022002 is an abundant number, since it is smaller than the sum of its proper divisors (21482416878).

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

21222022002 is a wasteful number, since it uses less digits than its factorization.

21222022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21699577.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 21222022002 its reverse (20022022212), we get a palindrome (41244044214).

The spelling of 21222022002 in words is "twenty-one billion, two hundred twenty-two million, twenty-two thousand, two".