712265022121 has 2 divisors, whose sum is σ = 712265022122. Its totient is φ = 712265022120.

The previous prime is 712265022113. The next prime is 712265022167. The reversal of 712265022121 is 121220562217.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 688176430096 + 24088592025 = 829564^2 + 155205^2 .

It is a cyclic number.

It is not a de Polignac number, because 712265022121 - 2³ = 712265022113 is a prime.

It is not a weakly prime, because it can be changed into another prime (712265062121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356132511060 + 356132511061.

It is an arithmetic number, because the mean of its divisors is an integer number (356132511061).

Almost surely, 2^712265022121 is an apocalyptic number.

It is an amenable number.

712265022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

712265022121 is an equidigital number, since it uses as much as digits as its factorization.

712265022121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 712265022121 its reverse (121220562217), we get a palindrome (833485584338).

The spelling of 712265022121 in words is "seven hundred twelve billion, two hundred sixty-five million, twenty-two thousand, one hundred twenty-one".