22321139 has 4 divisors (see below), whose sum is σ = 22497024. Its totient is φ = 22145256.

The previous prime is 22321133. The next prime is 22321151. The reversal of 22321139 is 93112322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93112322 = 2 ⋅46556161.

It is a cyclic number.

It is not a de Polignac number, because 22321139 - 2¹⁶ = 22255603 is a prime.

It is a super-3 number, since 3×22321139³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22321133) 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, 87752 + ... + 88005.

It is an arithmetic number, because the mean of its divisors is an integer number (5624256).

Almost surely, 2^22321139 is an apocalyptic number.

22321139 is a deficient number, since it is larger than the sum of its proper divisors (175885).

22321139 is a wasteful number, since it uses less digits than its factorization.

22321139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175884.

The product of its digits is 648, while the sum is 23.

The square root of 22321139 is about 4724.5252671565. The cubic root of 22321139 is about 281.5607525566.

The spelling of 22321139 in words is "twenty-two million, three hundred twenty-one thousand, one hundred thirty-nine".