212212220210 has 64 divisors (see below), whose sum is σ = 414063788544. Its totient is φ = 78097958400.

The previous prime is 212212220197. The next prime is 212212220249. The reversal of 212212220210 is 12022212212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 511052 + ... + 828008.

It is an arithmetic number, because the mean of its divisors is an integer number (6469746696).

Almost surely, 2^212212220210 is an apocalyptic number.

212212220210 is a deficient number, since it is larger than the sum of its proper divisors (201851568334).

212212220210 is a wasteful number, since it uses less digits than its factorization.

212212220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317099.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212212220210 its reverse (12022212212), we get a palindrome (224234432422).

The spelling of 212212220210 in words is "two hundred twelve billion, two hundred twelve million, two hundred twenty thousand, two hundred ten".