212220120210 has 64 divisors (see below), whose sum is σ = 591955430400. Its totient is φ = 47685292992.

The previous prime is 212220120197. The next prime is 212220120223. The reversal of 212220120210 is 12021022212.

It is an interprime number because it is at equal distance from previous prime (212220120197) and next prime (212220120223).

It is a super-3 number, since 3×212220120210³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212220120210.

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, 8551780 + ... + 8576559.

It is an arithmetic number, because the mean of its divisors is an integer number (9249303600).

Almost surely, 2^212220120210 is an apocalyptic number.

212220120210 is an abundant number, since it is smaller than the sum of its proper divisors (379735310190).

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

212220120210 is a wasteful number, since it uses less digits than its factorization.

212220120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17128415.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212220120210 its reverse (12021022212), we get a palindrome (224241142422).

The spelling of 212220120210 in words is "two hundred twelve billion, two hundred twenty million, one hundred twenty thousand, two hundred ten".