331201220455 has 8 divisors (see below), whose sum is σ = 454218816672. Its totient is φ = 227109408288.

The previous prime is 331201220453. The next prime is 331201220479. The reversal of 331201220455 is 554022102133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 331201220455 - 2¹ = 331201220453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331201220453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4731445972 + ... + 4731446041.

It is an arithmetic number, because the mean of its divisors is an integer number (56777352084).

Almost surely, 2^331201220455 is an apocalyptic number.

331201220455 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

331201220455 is a deficient number, since it is larger than the sum of its proper divisors (123017596217).

331201220455 is an equidigital number, since it uses as much as digits as its factorization.

331201220455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9462892025.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 331201220455 its reverse (554022102133), we get a palindrome (885223322588).

The spelling of 331201220455 in words is "three hundred thirty-one billion, two hundred one million, two hundred twenty thousand, four hundred fifty-five".