1201233401 has 4 divisors (see below), whose sum is σ = 1201878672. Its totient is φ = 1200588132.

The previous prime is 1201233391. The next prime is 1201233421. The reversal of 1201233401 is 1043321021.

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.

It is a cyclic number.

It is not a de Polignac number, because 1201233401 - 2²² = 1197039097 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 1201233401.

It is not an unprimeable number, because it can be changed into a prime (1201233421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319835 + ... + 323568.

It is an arithmetic number, because the mean of its divisors is an integer number (300469668).

Almost surely, 2^1201233401 is an apocalyptic number.

It is an amenable number.

1201233401 is a deficient number, since it is larger than the sum of its proper divisors (645271).

1201233401 is an equidigital number, since it uses as much as digits as its factorization.

1201233401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645270.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1201233401 is about 34658.8141891785. The cubic root of 1201233401 is about 1063.0225234445.

Adding to 1201233401 its reverse (1043321021), we get a palindrome (2244554422).

The spelling of 1201233401 in words is "one billion, two hundred one million, two hundred thirty-three thousand, four hundred one".