22219139 has 2 divisors, whose sum is σ = 22219140. Its totient is φ = 22219138.

The previous prime is 22219121. The next prime is 22219147. The reversal of 22219139 is 93191222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22219139 - 2²⁰ = 21170563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22219199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11109569 + 11109570.

It is an arithmetic number, because the mean of its divisors is an integer number (11109570).

Almost surely, 2^22219139 is an apocalyptic number.

22219139 is a deficient number, since it is larger than the sum of its proper divisors (1).

22219139 is an equidigital number, since it uses as much as digits as its factorization.

22219139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 29.

The square root of 22219139 is about 4713.7181714651. The cubic root of 22219139 is about 281.1312187142.

The spelling of 22219139 in words is "twenty-two million, two hundred nineteen thousand, one hundred thirty-nine".