2111520097 has 2 divisors, whose sum is σ = 2111520098. Its totient is φ = 2111520096.

The previous prime is 2111520079. The next prime is 2111520113. The reversal of 2111520097 is 7900251112.

Together with previous prime (2111520079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1715947776 + 395572321 = 41424^2 + 19889^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111520097 - 2¹¹ = 2111518049 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111520007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055760048 + 1055760049.

It is an arithmetic number, because the mean of its divisors is an integer number (1055760049).

Almost surely, 2^2111520097 is an apocalyptic number.

It is an amenable number.

2111520097 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111520097 is an equidigital number, since it uses as much as digits as its factorization.

2111520097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 2111520097 is about 45951.2796013343. The cubic root of 2111520097 is about 1282.9165462690.

The spelling of 2111520097 in words is "two billion, one hundred eleven million, five hundred twenty thousand, ninety-seven".