212211220210 has 32 divisors (see below), whose sum is σ = 438637550400. Its totient is φ = 73106256960.

The previous prime is 212211220189. The next prime is 212211220289. The reversal of 212211220210 is 12022112212.

It is a happy number.

It is a super-2 number, since 2×212211220210² (a number of 23 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, 50766145 + ... + 50770324.

It is an arithmetic number, because the mean of its divisors is an integer number (13707423450).

Almost surely, 2^212211220210 is an apocalyptic number.

212211220210 is an abundant number, since it is smaller than the sum of its proper divisors (226426330190).

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

212211220210 is a wasteful number, since it uses less digits than its factorization.

212211220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101536506.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212211220210 its reverse (12022112212), we get a palindrome (224233332422).

It can be divided in two parts, 2122112202 and 10, that added together give a palindrome (2122112212).

The spelling of 212211220210 in words is "two hundred twelve billion, two hundred eleven million, two hundred twenty thousand, two hundred ten".