1213020211297 has 2 divisors, whose sum is σ = 1213020211298. Its totient is φ = 1213020211296.

The previous prime is 1213020211289. The next prime is 1213020211367. The reversal of 1213020211297 is 7921120203121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1027934404641 + 185085806656 = 1013871^2 + 430216^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213020211297 - 2³ = 1213020211289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213080211297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606510105648 + 606510105649.

It is an arithmetic number, because the mean of its divisors is an integer number (606510105649).

Almost surely, 2^{1213020211297} is an apocalyptic number.

It is an amenable number.

1213020211297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213020211297 is an equidigital number, since it uses as much as digits as its factorization.

1213020211297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 1213020211297 in words is "one trillion, two hundred thirteen billion, twenty million, two hundred eleven thousand, two hundred ninety-seven".