15221002112249 has 2 divisors, whose sum is σ = 15221002112250. Its totient is φ = 15221002112248.

The previous prime is 15221002112209. The next prime is 15221002112269. The reversal of 15221002112249 is 94221120012251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14416335703225 + 804666409024 = 3796885^2 + 897032^2 .

It is a cyclic number.

It is not a de Polignac number, because 15221002112249 - 2⁸ = 15221002111993 is a prime.

It is not a weakly prime, because it can be changed into another prime (15221002112209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7610501056124 + 7610501056125.

It is an arithmetic number, because the mean of its divisors is an integer number (7610501056125).

Almost surely, 2^{15221002112249} is an apocalyptic number.

It is an amenable number.

15221002112249 is a deficient number, since it is larger than the sum of its proper divisors (1).

15221002112249 is an equidigital number, since it uses as much as digits as its factorization.

15221002112249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 15221002112249 in words is "fifteen trillion, two hundred twenty-one billion, two million, one hundred twelve thousand, two hundred forty-nine".