331121212231021 has 32 divisors (see below), whose sum is σ = 352536717312000. Its totient is φ = 310326332426880.

The previous prime is 331121212230967. The next prime is 331121212231081. The reversal of 331121212231021 is 120132212121133.

It is a cyclic number.

It is not a de Polignac number, because 331121212231021 - 2¹¹ = 331121212228973 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 (331121212231081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5507000260 + ... + 5507060386.

It is an arithmetic number, because the mean of its divisors is an integer number (11016772416000).

Almost surely, 2^{331121212231021} is an apocalyptic number.

It is an amenable number.

331121212231021 is a deficient number, since it is larger than the sum of its proper divisors (21415505080979).

331121212231021 is a wasteful number, since it uses less digits than its factorization.

331121212231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73569.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 331121212231021 its reverse (120132212121133), we get a palindrome (451253424352154).

The spelling of 331121212231021 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, two hundred twelve million, two hundred thirty-one thousand, twenty-one".