100321221331 has 2 divisors, whose sum is σ = 100321221332. Its totient is φ = 100321221330.

The previous prime is 100321221323. The next prime is 100321221401. The reversal of 100321221331 is 133122123001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100321221331 - 2³ = 100321221323 is a prime.

It is a super-2 number, since 2×100321221331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100321221299 and 100321221308.

It is not a weakly prime, because it can be changed into another prime (100321221731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50160610665 + 50160610666.

It is an arithmetic number, because the mean of its divisors is an integer number (50160610666).

Almost surely, 2^100321221331 is an apocalyptic number.

100321221331 is a deficient number, since it is larger than the sum of its proper divisors (1).

100321221331 is an equidigital number, since it uses as much as digits as its factorization.

100321221331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 100321221331 its reverse (133122123001), we get a palindrome (233443344332).

The spelling of 100321221331 in words is "one hundred billion, three hundred twenty-one million, two hundred twenty-one thousand, three hundred thirty-one".