212222121021210 has 32 divisors (see below), whose sum is σ = 509577140956032. Its totient is φ = 56565448882880.

The previous prime is 212222121021203. The next prime is 212222121021269. The reversal of 212222121021210 is 12120121222212.

It is a super-2 number, since 2×212222121021210² (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 15 ways as a sum of consecutive naturals, for example, 1694731521 + ... + 1694856740.

It is an arithmetic number, because the mean of its divisors is an integer number (15924285654876).

Almost surely, 2^{212222121021210} is an apocalyptic number.

212222121021210 is an abundant number, since it is smaller than the sum of its proper divisors (297355019934822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212222121021210 is a wasteful number, since it uses less digits than its factorization.

212222121021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389590358.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212222121021210 its reverse (12120121222212), we get a palindrome (224342242243422).

The spelling of 212222121021210 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred twenty-one million, twenty-one thousand, two hundred ten".