321121033312 has 48 divisors (see below), whose sum is σ = 636362253072. Its totient is φ = 159506690560.

The previous prime is 321121033309. The next prime is 321121033319. The reversal of 321121033312 is 213330121123.

It is a super-2 number, since 2×321121033312² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321121033319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7213362 + ... + 7257742.

It is an arithmetic number, because the mean of its divisors is an integer number (13257546939).

Almost surely, 2^321121033312 is an apocalyptic number.

321121033312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

321121033312 is a deficient number, since it is larger than the sum of its proper divisors (315241219760).

321121033312 is a wasteful number, since it uses less digits than its factorization.

321121033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45871 (or 45863 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 321121033312 its reverse (213330121123), we get a palindrome (534451154435).

The spelling of 321121033312 in words is "three hundred twenty-one billion, one hundred twenty-one million, thirty-three thousand, three hundred twelve".