990100221313321 has 4 divisors (see below), whose sum is σ = 1042210759277200. Its totient is φ = 937989683349444.

The previous prime is 990100221313303. The next prime is 990100221313369. The reversal of 990100221313321 is 123313122001099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 990100221313321 - 2³¹ = 990098073829673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990100221113321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26055268981911 + ... + 26055268981948.

It is an arithmetic number, because the mean of its divisors is an integer number (260552689819300).

Almost surely, 2^{990100221313321} is an apocalyptic number.

It is an amenable number.

990100221313321 is a deficient number, since it is larger than the sum of its proper divisors (52110537963879).

990100221313321 is a wasteful number, since it uses less digits than its factorization.

990100221313321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52110537963878.

The product of its (nonzero) digits is 17496, while the sum is 37.

The spelling of 990100221313321 in words is "nine hundred ninety trillion, one hundred billion, two hundred twenty-one million, three hundred thirteen thousand, three hundred twenty-one".