2391112201 has 9 divisors (see below), whose sum is σ = 2418960999. Its totient is φ = 2363582064.

The previous prime is 2391112193. The next prime is 2391112211. The reversal of 2391112201 is 1022111932.

The square root of 2391112201 is 48899.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2067975625 + 323136576 = 45475^2 + 17976^2 .

It is not a de Polignac number, because 2391112201 - 2³ = 2391112193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2391112211) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5231965 + ... + 5232421.

Almost surely, 2^2391112201 is an apocalyptic number.

2391112201 is the 48899-th square number.

2391112201 is the 24450-th centered octagonal number.

It is an amenable number.

2391112201 is a deficient number, since it is larger than the sum of its proper divisors (27848798).

2391112201 is an frugal number, since it uses more digits than its factorization.

2391112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The cubic root of 2391112201 is about 1337.2111376183.

The spelling of 2391112201 in words is "two billion, three hundred ninety-one million, one hundred twelve thousand, two hundred one".