211222202122210 has 16 divisors (see below), whose sum is σ = 380227065075000. Its totient is φ = 84482858347776.

The previous prime is 211222202122181. The next prime is 211222202122237. The reversal of 211222202122210 is 12221202222112.

It can be written as a sum of positive squares in 4 ways, for example, as 157728908006289 + 53493294115921 = 12559017^2 + 7313911^2 .

It is a super-2 number, since 2×211222202122210² (a number of 29 digits) contains 22 as substring.

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, 752665335 + ... + 752945914.

Almost surely, 2^{211222202122210} is an apocalyptic number.

211222202122210 is a deficient number, since it is larger than the sum of its proper divisors (169004862952790).

211222202122210 is a wasteful number, since it uses less digits than its factorization.

211222202122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505625285.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 211222202122210 its reverse (12221202222112), we get a palindrome (223443404344322).

The spelling of 211222202122210 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred two million, one hundred twenty-two thousand, two hundred ten".