12221039 has 2 divisors, whose sum is σ = 12221040. Its totient is φ = 12221038.

The previous prime is 12221029. The next prime is 12221057. The reversal of 12221039 is 93012221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12221039 - 2²⁰ = 11172463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12221039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110519 + 6110520.

It is an arithmetic number, because the mean of its divisors is an integer number (6110520).

Almost surely, 2^12221039 is an apocalyptic number.

12221039 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221039 is an equidigital number, since it uses as much as digits as its factorization.

12221039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12221039 is about 3495.8602660862. The cubic root of 12221039 is about 230.3400075184.

The spelling of 12221039 in words is "twelve million, two hundred twenty-one thousand, thirty-nine".