2113125569 has 2 divisors, whose sum is σ = 2113125570. Its totient is φ = 2113125568.

The previous prime is 2113125523. The next prime is 2113125589. The reversal of 2113125569 is 9655213112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2044848400 + 68277169 = 45220^2 + 8263^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113125569 - 2¹² = 2113121473 is a prime.

It is a super-2 number, since 2×2113125569² = 8930599340723147522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2113125589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056562784 + 1056562785.

It is an arithmetic number, because the mean of its divisors is an integer number (1056562785).

Almost surely, 2^2113125569 is an apocalyptic number.

It is an amenable number.

2113125569 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113125569 is an equidigital number, since it uses as much as digits as its factorization.

2113125569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 35.

The square root of 2113125569 is about 45968.7455669610. The cubic root of 2113125569 is about 1283.2416145766.

The spelling of 2113125569 in words is "two billion, one hundred thirteen million, one hundred twenty-five thousand, five hundred sixty-nine".