212211201210 has 64 divisors (see below), whose sum is σ = 536168332800. Its totient is φ = 53605668672.

The previous prime is 212211201197. The next prime is 212211201221. The reversal of 212211201210 is 12102112212.

It is a super-2 number, since 2×212211201210² (a number of 23 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 212211201210.

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, 9986617 + ... + 10007843.

It is an arithmetic number, because the mean of its divisors is an integer number (8377630200).

Almost surely, 2^212211201210 is an apocalyptic number.

212211201210 is an abundant number, since it is smaller than the sum of its proper divisors (323957131590).

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

212211201210 is a wasteful number, since it uses less digits than its factorization.

212211201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38795.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212211201210 its reverse (12102112212), we get a palindrome (224313313422).

The spelling of 212211201210 in words is "two hundred twelve billion, two hundred eleven million, two hundred one thousand, two hundred ten".