221112101210 has 64 divisors (see below), whose sum is σ = 534380039424. Its totient is φ = 63616665600.

The previous prime is 221112101207. The next prime is 221112101233. The reversal of 221112101210 is 12101211122.

221112101210 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 2×221112101210² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11034551 + ... + 11054570.

It is an arithmetic number, because the mean of its divisors is an integer number (8349688116).

Almost surely, 2^221112101210 is an apocalyptic number.

221112101210 is an abundant number, since it is smaller than the sum of its proper divisors (313267938214).

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

221112101210 is a wasteful number, since it uses less digits than its factorization.

221112101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22089159.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221112101210 its reverse (12101211122), we get a palindrome (233213312332).

The spelling of 221112101210 in words is "two hundred twenty-one billion, one hundred twelve million, one hundred one thousand, two hundred ten".