7257236476121 has 2 divisors, whose sum is σ = 7257236476122. Its totient is φ = 7257236476120.

The previous prime is 7257236476099. The next prime is 7257236476129. The reversal of 7257236476121 is 1216746327527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7247192427721 + 10044048400 = 2692061^2 + 100220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7257236476121 is a prime.

It is a super-2 number, since 2×7257236476121² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7257236476129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3628618238060 + 3628618238061.

It is an arithmetic number, because the mean of its divisors is an integer number (3628618238061).

Almost surely, 2^{7257236476121} is an apocalyptic number.

It is an amenable number.

7257236476121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7257236476121 is an equidigital number, since it uses as much as digits as its factorization.

7257236476121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5927040, while the sum is 53.

The spelling of 7257236476121 in words is "seven trillion, two hundred fifty-seven billion, two hundred thirty-six million, four hundred seventy-six thousand, one hundred twenty-one".