331013221201021 has 4 divisors (see below), whose sum is σ = 331013727982944. Its totient is φ = 331012714419100.

The previous prime is 331013221200929. The next prime is 331013221201027. The reversal of 331013221201021 is 120102122310133.

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 331013221201021 - 2⁹ = 331013221200509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331013221200983 and 331013221201001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331013221201027) 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, 252409945 + ... + 253717966.

It is an arithmetic number, because the mean of its divisors is an integer number (82753431995736).

Almost surely, 2^{331013221201021} is an apocalyptic number.

It is an amenable number.

331013221201021 is a deficient number, since it is larger than the sum of its proper divisors (506781923).

331013221201021 is an equidigital number, since it uses as much as digits as its factorization.

331013221201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506781922.

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

Adding to 331013221201021 its reverse (120102122310133), we get a palindrome (451115343511154).

The spelling of 331013221201021 in words is "three hundred thirty-one trillion, thirteen billion, two hundred twenty-one million, two hundred one thousand, twenty-one".