1031210313121 has 2 divisors, whose sum is σ = 1031210313122. Its totient is φ = 1031210313120.

The previous prime is 1031210312989. The next prime is 1031210313131. The reversal of 1031210313121 is 1213130121301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 536466888721 + 494743424400 = 732439^2 + 703380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031210313121 - 2³³ = 1022620378529 is a prime.

It is a super-2 number, since 2×1031210313121² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1031210313131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515605156560 + 515605156561.

It is an arithmetic number, because the mean of its divisors is an integer number (515605156561).

Almost surely, 2^{1031210313121} is an apocalyptic number.

It is an amenable number.

1031210313121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031210313121 is an equidigital number, since it uses as much as digits as its factorization.

1031210313121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1031210313121 its reverse (1213130121301), we get a palindrome (2244340434422).

The spelling of 1031210313121 in words is "one trillion, thirty-one billion, two hundred ten million, three hundred thirteen thousand, one hundred twenty-one".