1201163601 has 16 divisors (see below), whose sum is σ = 1747934208. Its totient is φ = 727650000.

The previous prime is 1201163581. The next prime is 1201163617. The reversal of 1201163601 is 1063611021.

It is not a de Polignac number, because 1201163601 - 2²² = 1196969297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1201163651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80476 + ... + 94226.

It is an arithmetic number, because the mean of its divisors is an integer number (109245888).

Almost surely, 2^1201163601 is an apocalyptic number.

1201163601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201163601 is a deficient number, since it is larger than the sum of its proper divisors (546770607).

1201163601 is a wasteful number, since it uses less digits than its factorization.

1201163601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16412.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1201163601 is about 34657.8072156910. The cubic root of 1201163601 is about 1063.0019333829.

Adding to 1201163601 its reverse (1063611021), we get a palindrome (2264774622).

The spelling of 1201163601 in words is "one billion, two hundred one million, one hundred sixty-three thousand, six hundred one".