11801257201 has 4 divisors (see below), whose sum is σ = 11811336304. Its totient is φ = 11791178100.

The previous prime is 11801257157. The next prime is 11801257229. The reversal of 11801257201 is 10275210811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10275210811 = 19 ⋅540800569.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11801257201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11801257201.

It is not an unprimeable number, because it can be changed into a prime (11801257291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5037795 + ... + 5040136.

It is an arithmetic number, because the mean of its divisors is an integer number (2952834076).

Almost surely, 2^11801257201 is an apocalyptic number.

It is an amenable number.

11801257201 is a deficient number, since it is larger than the sum of its proper divisors (10079103).

11801257201 is a wasteful number, since it uses less digits than its factorization.

11801257201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10079102.

The product of its (nonzero) digits is 1120, while the sum is 28.

The spelling of 11801257201 in words is "eleven billion, eight hundred one million, two hundred fifty-seven thousand, two hundred one".