22002121210 has 16 divisors (see below), whose sum is σ = 39624341256. Its totient is φ = 8796287808.

The previous prime is 22002121187. The next prime is 22002121237. The reversal of 22002121210 is 1212120022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13025885161 + 8976236049 = 114131^2 + 94743^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549789 + ... + 588448.

Almost surely, 2^22002121210 is an apocalyptic number.

22002121210 is a deficient number, since it is larger than the sum of its proper divisors (17622220046).

22002121210 is a wasteful number, since it uses less digits than its factorization.

22002121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140177.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22002121210 its reverse (1212120022), we get a palindrome (23214241232).

The spelling of 22002121210 in words is "twenty-two billion, two million, one hundred twenty-one thousand, two hundred ten".