1012210011997 has 2 divisors, whose sum is σ = 1012210011998. Its totient is φ = 1012210011996.

The previous prime is 1012210011931. The next prime is 1012210012039. The reversal of 1012210011997 is 7991100122101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 697123133721 + 315086878276 = 834939^2 + 561326^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012210011997 - 2³⁵ = 977850273629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012210011497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506105005998 + 506105005999.

It is an arithmetic number, because the mean of its divisors is an integer number (506105005999).

Almost surely, 2^{1012210011997} is an apocalyptic number.

It is an amenable number.

1012210011997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012210011997 is an equidigital number, since it uses as much as digits as its factorization.

1012210011997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 34.

The spelling of 1012210011997 in words is "one trillion, twelve billion, two hundred ten million, eleven thousand, nine hundred ninety-seven".