2011210997 has 2 divisors, whose sum is σ = 2011210998. Its totient is φ = 2011210996.

The previous prime is 2011210979. The next prime is 2011211117. The reversal of 2011210997 is 7990121102.

Together with previous prime (2011210979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1247573041 + 763637956 = 35321^2 + 27634^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011210997 - 2⁸ = 2011210741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011210897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005605498 + 1005605499.

It is an arithmetic number, because the mean of its divisors is an integer number (1005605499).

Almost surely, 2^2011210997 is an apocalyptic number.

It is an amenable number.

2011210997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011210997 is an equidigital number, since it uses as much as digits as its factorization.

2011210997 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 32.

The square root of 2011210997 is about 44846.5271453654. The cubic root of 2011210997 is about 1262.2708266439.

The spelling of 2011210997 in words is "two billion, eleven million, two hundred ten thousand, nine hundred ninety-seven".