12213139 has 8 divisors (see below), whose sum is σ = 12386880. Its totient is φ = 12040896.

The previous prime is 12213137. The next prime is 12213167. The reversal of 12213139 is 93131221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12213139 - 2¹ = 12213137 is a prime.

It is a super-3 number, since 3×12213139³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32557 + ... + 32929.

It is an arithmetic number, because the mean of its divisors is an integer number (1548360).

Almost surely, 2^12213139 is an apocalyptic number.

12213139 is a deficient number, since it is larger than the sum of its proper divisors (173741).

12213139 is a wasteful number, since it uses less digits than its factorization.

12213139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749.

The product of its digits is 324, while the sum is 22.

The square root of 12213139 is about 3494.7301755643. The cubic root of 12213139 is about 230.2903642134.

The spelling of 12213139 in words is "twelve million, two hundred thirteen thousand, one hundred thirty-nine".