221112022111 has 4 divisors (see below), whose sum is σ = 222223138000. Its totient is φ = 220000906224.

The previous prime is 221112022091. The next prime is 221112022177. The reversal of 221112022111 is 111220211122.

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 221112022111 - 2⁷ = 221112021983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112022211) 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, 555557646 + ... + 555558043.

It is an arithmetic number, because the mean of its divisors is an integer number (55555784500).

Almost surely, 2^221112022111 is an apocalyptic number.

221112022111 is a deficient number, since it is larger than the sum of its proper divisors (1111115889).

221112022111 is a wasteful number, since it uses less digits than its factorization.

221112022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111115888.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221112022111 its reverse (111220211122), we get a palindrome (332332233233).

The spelling of 221112022111 in words is "two hundred twenty-one billion, one hundred twelve million, twenty-two thousand, one hundred eleven".