211212112210 has 64 divisors (see below), whose sum is σ = 417737689344. Its totient is φ = 76250592000.

The previous prime is 211212112141. The next prime is 211212112213. The reversal of 211212112210 is 12211212112.

It is a super-2 number, since 2×211212112210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211212112213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42469284 + ... + 42474256.

It is an arithmetic number, because the mean of its divisors is an integer number (6527151396).

Almost surely, 2^211212112210 is an apocalyptic number.

211212112210 is a deficient number, since it is larger than the sum of its proper divisors (206525577134).

211212112210 is a wasteful number, since it uses less digits than its factorization.

211212112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7699.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211212112210 its reverse (12211212112), we get a palindrome (223423324322).

The spelling of 211212112210 in words is "two hundred eleven billion, two hundred twelve million, one hundred twelve thousand, two hundred ten".