2010111997 has 2 divisors, whose sum is σ = 2010111998. Its totient is φ = 2010111996.

The previous prime is 2010111991. The next prime is 2010112019. The reversal of 2010111997 is 7991110102.

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., 1410302916 + 599809081 = 37554^2 + 24491^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010111997 - 2⁷ = 2010111869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2010111991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005055998 + 1005055999.

It is an arithmetic number, because the mean of its divisors is an integer number (1005055999).

Almost surely, 2^2010111997 is an apocalyptic number.

It is an amenable number.

2010111997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010111997 is an equidigital number, since it uses as much as digits as its factorization.

2010111997 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 square root of 2010111997 is about 44834.2725713265. The cubic root of 2010111997 is about 1262.0408676132.

The spelling of 2010111997 in words is "two billion, ten million, one hundred eleven thousand, nine hundred ninety-seven".