22013977 has 4 divisors (see below), whose sum is σ = 22124800. Its totient is φ = 21903156.

The previous prime is 22013941. The next prime is 22013983. The reversal of 22013977 is 77931022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22013977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22013477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55113 + ... + 55510.

It is an arithmetic number, because the mean of its divisors is an integer number (5531200).

Almost surely, 2^22013977 is an apocalyptic number.

It is an amenable number.

22013977 is a deficient number, since it is larger than the sum of its proper divisors (110823).

22013977 is a wasteful number, since it uses less digits than its factorization.

22013977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110822.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 22013977 is about 4691.9054764562. The cubic root of 22013977 is about 280.2632600546.

Adding to 22013977 its reverse (77931022), we get a palindrome (99944999).

The spelling of 22013977 in words is "twenty-two million, thirteen thousand, nine hundred seventy-seven".