22271399 has 4 divisors (see below), whose sum is σ = 22288200. Its totient is φ = 22254600.

The previous prime is 22271393. The next prime is 22271407. The reversal of 22271399 is 99317222.

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 22271399 - 2¹⁶ = 22205863 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 (22271393) 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, 6224 + ... + 9125.

It is an arithmetic number, because the mean of its divisors is an integer number (5572050).

Almost surely, 2^22271399 is an apocalyptic number.

22271399 is a deficient number, since it is larger than the sum of its proper divisors (16801).

22271399 is a wasteful number, since it uses less digits than its factorization.

22271399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16800.

The product of its digits is 13608, while the sum is 35.

The square root of 22271399 is about 4719.2583103704. The cubic root of 22271399 is about 281.3514554798.

The spelling of 22271399 in words is "twenty-two million, two hundred seventy-one thousand, three hundred ninety-nine".