331311022010221 has 4 divisors (see below), whose sum is σ = 361430205829344. Its totient is φ = 301191838191100.

The previous prime is 331311022010077. The next prime is 331311022010249. The reversal of 331311022010221 is 122010220113133.

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 331311022010221 - 2¹¹ = 331311022008173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331311022010192 and 331311022010201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331311022010021) 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, 15059591909545 + ... + 15059591909566.

It is an arithmetic number, because the mean of its divisors is an integer number (90357551457336).

Almost surely, 2^{331311022010221} is an apocalyptic number.

It is an amenable number.

331311022010221 is a deficient number, since it is larger than the sum of its proper divisors (30119183819123).

331311022010221 is a wasteful number, since it uses less digits than its factorization.

331311022010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30119183819122.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 331311022010221 its reverse (122010220113133), we get a palindrome (453321242123354).

The spelling of 331311022010221 in words is "three hundred thirty-one trillion, three hundred eleven billion, twenty-two million, ten thousand, two hundred twenty-one".