211221030232110 has 64 divisors (see below), whose sum is σ = 528978182169600. Its totient is φ = 53875929719040.

The previous prime is 211221030232067. The next prime is 211221030232127. The reversal of 211221030232110 is 11232030122112.

It is a super-2 number, since 2×211221030232110² (a number of 29 digits) contains 22 as substring.

It is a congruent 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, 49157466 + ... + 53281314.

It is an arithmetic number, because the mean of its divisors is an integer number (8265284096400).

Almost surely, 2^{211221030232110} is an apocalyptic number.

211221030232110 is an abundant number, since it is smaller than the sum of its proper divisors (317757151937490).

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

211221030232110 is a wasteful number, since it uses less digits than its factorization.

211221030232110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4198113.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 211221030232110 its reverse (11232030122112), we get a palindrome (222453060354222).

The spelling of 211221030232110 in words is "two hundred eleven trillion, two hundred twenty-one billion, thirty million, two hundred thirty-two thousand, one hundred ten".