211212220022210 has 16 divisors (see below), whose sum is σ = 414743995680192. Its totient is φ = 76804443644400.

The previous prime is 211212220022179. The next prime is 211212220022239. The reversal of 211212220022210 is 12220022212112.

It is a super-2 number, since 2×211212220022210² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

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, 960055545446 + ... + 960055545665.

It is an arithmetic number, because the mean of its divisors is an integer number (25921499730012).

Almost surely, 2^{211212220022210} is an apocalyptic number.

211212220022210 is a deficient number, since it is larger than the sum of its proper divisors (203531775657982).

211212220022210 is a wasteful number, since it uses less digits than its factorization.

211212220022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920111091129.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 211212220022210 its reverse (12220022212112), we get a palindrome (223432242234322).

The spelling of 211212220022210 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred twenty million, twenty-two thousand, two hundred ten".