210011100997 has 2 divisors, whose sum is σ = 210011100998. Its totient is φ = 210011100996.

The previous prime is 210011100989. The next prime is 210011101031. The reversal of 210011100997 is 799001110012.

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., 151415152641 + 58595948356 = 389121^2 + 242066^2 .

It is a cyclic number.

It is not a de Polignac number, because 210011100997 - 2³ = 210011100989 is a prime.

It is a super-3 number, since 3×210011100997³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210011100967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105005550498 + 105005550499.

It is an arithmetic number, because the mean of its divisors is an integer number (105005550499).

Almost surely, 2^210011100997 is an apocalyptic number.

It is an amenable number.

210011100997 is a deficient number, since it is larger than the sum of its proper divisors (1).

210011100997 is an equidigital number, since it uses as much as digits as its factorization.

210011100997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 31.

The spelling of 210011100997 in words is "two hundred ten billion, eleven million, one hundred thousand, nine hundred ninety-seven".