331201432121 has 4 divisors (see below), whose sum is σ = 378515922432. Its totient is φ = 283886941812.

The previous prime is 331201432097. The next prime is 331201432123. The reversal of 331201432121 is 121234102133.

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: 121234102133 = 163979 ⋅739327.

It is a cyclic number.

It is not a de Polignac number, because 331201432121 - 2¹⁰ = 331201431097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331201432123) 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, 23657245145 + ... + 23657245158.

It is an arithmetic number, because the mean of its divisors is an integer number (94628980608).

Almost surely, 2^331201432121 is an apocalyptic number.

It is an amenable number.

331201432121 is a deficient number, since it is larger than the sum of its proper divisors (47314490311).

331201432121 is an equidigital number, since it uses as much as digits as its factorization.

331201432121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47314490310.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 331201432121 its reverse (121234102133), we get a palindrome (452435534254).

The spelling of 331201432121 in words is "three hundred thirty-one billion, two hundred one million, four hundred thirty-two thousand, one hundred twenty-one".