22013111 has 4 divisors (see below), whose sum is σ = 22161000. Its totient is φ = 21865224.

The previous prime is 22013081. The next prime is 22013137. The reversal of 22013111 is 11131022.

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 22013111 - 2¹⁴ = 21996727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22013092 and 22013101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22013161) 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, 73721 + ... + 74018.

It is an arithmetic number, because the mean of its divisors is an integer number (5540250).

Almost surely, 2^22013111 is an apocalyptic number.

22013111 is a deficient number, since it is larger than the sum of its proper divisors (147889).

22013111 is a wasteful number, since it uses less digits than its factorization.

22013111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147888.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 22013111 is about 4691.8131889494. The cubic root of 22013111 is about 280.2595849475.

Adding to 22013111 its reverse (11131022), we get a palindrome (33144133).

It can be divided in two parts, 220 and 13111, that added together give a palindrome (13331).

The spelling of 22013111 in words is "twenty-two million, thirteen thousand, one hundred eleven".