1201323001 has 16 divisors (see below), whose sum is σ = 1248710400. Its totient is φ = 1154926080.

The previous prime is 1201322957. The next prime is 1201323007. The reversal of 1201323001 is 1003231021.

It is a cyclic number.

It is not a de Polignac number, because 1201323001 - 2⁷ = 1201322873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201323007) 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, 921316 + ... + 922618.

It is an arithmetic number, because the mean of its divisors is an integer number (78044400).

Almost surely, 2^1201323001 is an apocalyptic number.

It is an amenable number.

1201323001 is a deficient number, since it is larger than the sum of its proper divisors (47387399).

1201323001 is a wasteful number, since it uses less digits than its factorization.

1201323001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1201323001 is about 34660.1067655597. The cubic root of 1201323001 is about 1063.0489530709.

Adding to 1201323001 its reverse (1003231021), we get a palindrome (2204554022).

The spelling of 1201323001 in words is "one billion, two hundred one million, three hundred twenty-three thousand, one".