22139771 has 6 divisors (see below), whose sum is σ = 22310316. Its totient is φ = 21970500.

The previous prime is 22139749. The next prime is 22139837. The reversal of 22139771 is 17793122.

It is not a de Polignac number, because 22139771 - 2²² = 17945467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22139071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22316 + ... + 23286.

It is an arithmetic number, because the mean of its divisors is an integer number (3718386).

Almost surely, 2^22139771 is an apocalyptic number.

22139771 is a deficient number, since it is larger than the sum of its proper divisors (170545).

22139771 is an frugal number, since it uses more digits than its factorization.

22139771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273 (or 1122 counting only the distinct ones).

The product of its digits is 5292, while the sum is 32.

The square root of 22139771 is about 4705.2918081666. The cubic root of 22139771 is about 280.7960805710.

The spelling of 22139771 in words is "twenty-two million, one hundred thirty-nine thousand, seven hundred seventy-one".