331121123421 has 32 divisors (see below), whose sum is σ = 482335171200. Its totient is φ = 200386222080.

The previous prime is 331121123407. The next prime is 331121123441. The reversal of 331121123421 is 124321121133.

It is not a de Polignac number, because 331121123421 - 2⁷ = 331121123293 is a prime.

It is a super-2 number, since 2×331121123421² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331121123391 and 331121123400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331121123441) 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, 101662825 + ... + 101666081.

It is an arithmetic number, because the mean of its divisors is an integer number (15072974100).

Almost surely, 2^331121123421 is an apocalyptic number.

It is an amenable number.

331121123421 is a deficient number, since it is larger than the sum of its proper divisors (151214047779).

331121123421 is a wasteful number, since it uses less digits than its factorization.

331121123421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829.

The product of its digits is 864, while the sum is 24.

Adding to 331121123421 its reverse (124321121133), we get a palindrome (455442244554).

The spelling of 331121123421 in words is "three hundred thirty-one billion, one hundred twenty-one million, one hundred twenty-three thousand, four hundred twenty-one".