221120110011210 has 32 divisors (see below), whose sum is σ = 532217625043392. Its totient is φ = 58795433667840.

The previous prime is 221120110011181. The next prime is 221120110011217. The reversal of 221120110011210 is 12110011021122.

It is a happy number.

It is a super-2 number, since 2×221120110011210² (a number of 29 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 221120110011210.

It is not an unprimeable number, because it can be changed into a prime (221120110011217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10620552031 + ... + 10620572850.

It is an arithmetic number, because the mean of its divisors is an integer number (16631800782606).

Almost surely, 2^{221120110011210} is an apocalyptic number.

221120110011210 is an abundant number, since it is smaller than the sum of its proper divisors (311097515032182).

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

221120110011210 is a wasteful number, since it uses less digits than its factorization.

221120110011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21241125238.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221120110011210 its reverse (12110011021122), we get a palindrome (233230121032332).

The spelling of 221120110011210 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred ten million, eleven thousand, two hundred ten".