321121220232 has 64 divisors (see below), whose sum is σ = 837793054080. Its totient is φ = 102376023552.

The previous prime is 321121220221. The next prime is 321121220249. The reversal of 321121220232 is 232022121123.

It is a super-2 number, since 2×321121220232² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321121220199 and 321121220208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6806388 + ... + 6853404.

It is an arithmetic number, because the mean of its divisors is an integer number (13090516470).

Almost surely, 2^321121220232 is an apocalyptic number.

It is an amenable number.

321121220232 is an abundant number, since it is smaller than the sum of its proper divisors (516671833848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321121220232 is a wasteful number, since it uses less digits than its factorization.

321121220232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59422 (or 59418 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 321121220232 its reverse (232022121123), we get a palindrome (553143341355).

The spelling of 321121220232 in words is "three hundred twenty-one billion, one hundred twenty-one million, two hundred twenty thousand, two hundred thirty-two".