331121020312001 has 4 divisors (see below), whose sum is σ = 341802343547904. Its totient is φ = 320439697076100.

The previous prime is 331121020311997. The next prime is 331121020312003. The reversal of 331121020312001 is 100213020121133.

It is a happy number.

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 331121020312001 - 2² = 331121020311997 is a prime.

It is a super-2 number, since 2×331121020312001² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331121020312003) 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, 5340661617905 + ... + 5340661617966.

It is an arithmetic number, because the mean of its divisors is an integer number (85450585886976).

Almost surely, 2^{331121020312001} is an apocalyptic number.

331121020312001 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

331121020312001 is a deficient number, since it is larger than the sum of its proper divisors (10681323235903).

331121020312001 is a wasteful number, since it uses less digits than its factorization.

331121020312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10681323235902.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 331121020312001 its reverse (100213020121133), we get a palindrome (431334040433134).

The spelling of 331121020312001 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, twenty million, three hundred twelve thousand, one".