22121002121210 has 8 divisors (see below), whose sum is σ = 39817803818196. Its totient is φ = 8848400848480.

The previous prime is 22121002121161. The next prime is 22121002121221. The reversal of 22121002121210 is 1212120012122.

It can be written as a sum of positive squares in 2 ways, for example, as 20053925941921 + 2067076179289 = 4478161^2 + 1437733^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106050106051 + ... + 1106050106070.

Almost surely, 2^{22121002121210} is an apocalyptic number.

22121002121210 is a deficient number, since it is larger than the sum of its proper divisors (17696801696986).

22121002121210 is a wasteful number, since it uses less digits than its factorization.

22121002121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212100212128.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22121002121210 its reverse (1212120012122), we get a palindrome (23333122133332).

The spelling of 22121002121210 in words is "twenty-two trillion, one hundred twenty-one billion, two million, one hundred twenty-one thousand, two hundred ten".