221122102010111 has 4 divisors (see below), whose sum is σ = 234129284481312. Its totient is φ = 208114919538912.

The previous prime is 221122102009979. The next prime is 221122102010119. The reversal of 221122102010111 is 111010201221122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221122102010111 - 2²⁶ = 221122034901247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 13007182471183 = 221122102010111 / (2 + 2 + 1 + 1 + 2 + 2 + 1 + 0 + 2 + 0 + 1 + 0 + 1 + 1 + 1).

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 221122102010111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122102010119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6503591235575 + ... + 6503591235608.

It is an arithmetic number, because the mean of its divisors is an integer number (58532321120328).

Almost surely, 2^{221122102010111} is an apocalyptic number.

221122102010111 is a deficient number, since it is larger than the sum of its proper divisors (13007182471201).

221122102010111 is a wasteful number, since it uses less digits than its factorization.

221122102010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13007182471200.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221122102010111 its reverse (111010201221122), we get a palindrome (332132303231233).

The spelling of 221122102010111 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred two million, ten thousand, one hundred eleven".