221010112112111 has 32 divisors (see below), whose sum is σ = 257001497856000. Its totient is φ = 186137740115712.

The previous prime is 221010112112087. The next prime is 221010112112123. The reversal of 221010112112111 is 111211211010122.

It is a de Polignac number, because none of the positive numbers 2^k-221010112112111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221010112112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221010112112131) 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, 2623877345 + ... + 2623961573.

It is an arithmetic number, because the mean of its divisors is an integer number (8031296808000).

Almost surely, 2^{221010112112111} is an apocalyptic number.

221010112112111 is a deficient number, since it is larger than the sum of its proper divisors (35991385743889).

221010112112111 is a wasteful number, since it uses less digits than its factorization.

221010112112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98391.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 221010112112111 its reverse (111211211010122), we get a palindrome (332221323122233).

The spelling of 221010112112111 in words is "two hundred twenty-one trillion, ten billion, one hundred twelve million, one hundred twelve thousand, one hundred eleven".