100321220999 has 2 divisors, whose sum is σ = 100321221000. Its totient is φ = 100321220998.

The previous prime is 100321220983. The next prime is 100321221043. The reversal of 100321220999 is 999022123001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100321220999 - 2⁴ = 100321220983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100321220929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50160610499 + 50160610500.

It is an arithmetic number, because the mean of its divisors is an integer number (50160610500).

Almost surely, 2^100321220999 is an apocalyptic number.

100321220999 is a deficient number, since it is larger than the sum of its proper divisors (1).

100321220999 is an equidigital number, since it uses as much as digits as its factorization.

100321220999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 100321220999 in words is "one hundred billion, three hundred twenty-one million, two hundred twenty thousand, nine hundred ninety-nine".