331003212230221 has 4 divisors (see below), whose sum is σ = 350473989420252. Its totient is φ = 311532435040192.

The previous prime is 331003212230143. The next prime is 331003212230269. The reversal of 331003212230221 is 122032212300133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 242942442465321 + 88060769764900 = 15586611^2 + 9384070^2 .

It is a cyclic number.

It is not a de Polignac number, because 331003212230221 - 2²⁷ = 331003078012493 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 (331003212270221) 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, 9735388594990 + ... + 9735388595023.

It is an arithmetic number, because the mean of its divisors is an integer number (87618497355063).

Almost surely, 2^{331003212230221} is an apocalyptic number.

It is an amenable number.

331003212230221 is a deficient number, since it is larger than the sum of its proper divisors (19470777190031).

331003212230221 is a wasteful number, since it uses less digits than its factorization.

331003212230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19470777190030.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 331003212230221 its reverse (122032212300133), we get a palindrome (453035424530354).

The spelling of 331003212230221 in words is "three hundred thirty-one trillion, three billion, two hundred twelve million, two hundred thirty thousand, two hundred twenty-one".