211211221210 has 32 divisors (see below), whose sum is σ = 418848413184. Its totient is φ = 76043640000.

The previous prime is 211211221129. The next prime is 211211221223. The reversal of 211211221210 is 12122112112.

211211221210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211211221210² (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, 9494346 + ... + 9516565.

It is an arithmetic number, because the mean of its divisors is an integer number (13089012912).

Almost surely, 2^211211221210 is an apocalyptic number.

211211221210 is a deficient number, since it is larger than the sum of its proper divisors (207637191974).

211211221210 is a wasteful number, since it uses less digits than its factorization.

211211221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19011030.

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

Adding to 211211221210 its reverse (12122112112), we get a palindrome (223333333322).

The spelling of 211211221210 in words is "two hundred eleven billion, two hundred eleven million, two hundred twenty-one thousand, two hundred ten".