15055150221197 has 2 divisors, whose sum is σ = 15055150221198. Its totient is φ = 15055150221196.

The previous prime is 15055150221143. The next prime is 15055150221239. The reversal of 15055150221197 is 79112205155051.

15055150221197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13410346536196 + 1644803685001 = 3662014^2 + 1282499^2 .

It is a cyclic number.

It is not a de Polignac number, because 15055150221197 - 2⁸ = 15055150220941 is a prime.

It is a super-2 number, since 2×15055150221197² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15055150221497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7527575110598 + 7527575110599.

It is an arithmetic number, because the mean of its divisors is an integer number (7527575110599).

Almost surely, 2^{15055150221197} is an apocalyptic number.

It is an amenable number.

15055150221197 is a deficient number, since it is larger than the sum of its proper divisors (1).

15055150221197 is an equidigital number, since it uses as much as digits as its factorization.

15055150221197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157500, while the sum is 44.

The spelling of 15055150221197 in words is "fifteen trillion, fifty-five billion, one hundred fifty million, two hundred twenty-one thousand, one hundred ninety-seven".