331001201020021 has 48 divisors (see below), whose sum is σ = 406078850136960. Its totient is φ = 268271855470080.

The previous prime is 331001201019997. The next prime is 331001201020043. The reversal of 331001201020021 is 120020102100133.

It is not a de Polignac number, because 331001201020021 - 2¹¹ = 331001201017973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331001201019977 and 331001201020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331001201021021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1294661361 + ... + 1294917001.

It is an arithmetic number, because the mean of its divisors is an integer number (8459976044520).

Almost surely, 2^{331001201020021} is an apocalyptic number.

It is an amenable number.

331001201020021 is a deficient number, since it is larger than the sum of its proper divisors (75077649116939).

331001201020021 is a wasteful number, since it uses less digits than its factorization.

331001201020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258314 (or 258307 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 331001201020021 its reverse (120020102100133), we get a palindrome (451021303120154).

The spelling of 331001201020021 in words is "three hundred thirty-one trillion, one billion, two hundred one million, twenty thousand, twenty-one".