321100225131 has 96 divisors (see below), whose sum is σ = 539044968960. Its totient is φ = 168932542464.

The previous prime is 321100225109. The next prime is 321100225139. The reversal of 321100225131 is 131522001123.

It is not a de Polignac number, because 321100225131 - 2⁶ = 321100225067 is a prime.

It is a super-2 number, since 2×321100225131² (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 = 321100225098 and 321100225107.

It is not an unprimeable number, because it can be changed into a prime (321100225139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 141266011 + ... + 141268283.

It is an arithmetic number, because the mean of its divisors is an integer number (5615051760).

Almost surely, 2^321100225131 is an apocalyptic number.

321100225131 is a deficient number, since it is larger than the sum of its proper divisors (217944743829).

321100225131 is a wasteful number, since it uses less digits than its factorization.

321100225131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713 (or 3706 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 321100225131 its reverse (131522001123), we get a palindrome (452622226254).

The spelling of 321100225131 in words is "three hundred twenty-one billion, one hundred million, two hundred twenty-five thousand, one hundred thirty-one".