22012221002 has 32 divisors (see below), whose sum is σ = 34269552144. Its totient is φ = 10598860800.

The previous prime is 22012220983. The next prime is 22012221013. The reversal of 22012221002 is 20012221022.

It can be written as a sum of positive squares in 8 ways, for example, as 1551493321 + 20460727681 = 39389^2 + 143041^2 .

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, 1211102 + ... + 1229142.

Almost surely, 2^22012221002 is an apocalyptic number.

22012221002 is a deficient number, since it is larger than the sum of its proper divisors (12257331142).

22012221002 is a wasteful number, since it uses less digits than its factorization.

22012221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18314.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22012221002 its reverse (20012221022), we get a palindrome (42024442024).

The spelling of 22012221002 in words is "twenty-two billion, twelve million, two hundred twenty-one thousand, two".