222139293 has 4 divisors (see below), whose sum is σ = 296185728. Its totient is φ = 148092860.

The previous prime is 222139261. The next prime is 222139297. The reversal of 222139293 is 392931222.

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 not a de Polignac number, because 222139293 - 2⁵ = 222139261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222139297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37023213 + ... + 37023218.

It is an arithmetic number, because the mean of its divisors is an integer number (74046432).

Almost surely, 2^222139293 is an apocalyptic number.

It is an amenable number.

222139293 is a deficient number, since it is larger than the sum of its proper divisors (74046435).

222139293 is an equidigital number, since it uses as much as digits as its factorization.

222139293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74046434.

The product of its digits is 11664, while the sum is 33.

The square root of 222139293 is about 14904.3380597731. The cubic root of 222139293 is about 605.6315087041.

It can be divided in two parts, 2221 and 39293, that added together give a palindrome (41514).

The spelling of 222139293 in words is "two hundred twenty-two million, one hundred thirty-nine thousand, two hundred ninety-three".