321121023132 has 144 divisors (see below), whose sum is σ = 945417540480. Its totient is φ = 84081691008.

The previous prime is 321121023131. The next prime is 321121023143. The reversal of 321121023132 is 231320121123.

It is a super-2 number, since 2×321121023132² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 321121023099 and 321121023108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321121023131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 911403 + ... + 1213629.

Almost surely, 2^321121023132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321121023132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472708770240).

321121023132 is an abundant number, since it is smaller than the sum of its proper divisors (624296517348).

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

321121023132 is a wasteful number, since it uses less digits than its factorization.

321121023132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302400 (or 302391 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 321121023132 its reverse (231320121123), we get a palindrome (552441144255).

The spelling of 321121023132 in words is "three hundred twenty-one billion, one hundred twenty-one million, twenty-three thousand, one hundred thirty-two".