990100112102221 has 8 divisors (see below), whose sum is σ = 1003769145057024. Its totient is φ = 976433944491360.

The previous prime is 990100112102191. The next prime is 990100112102239. The reversal of 990100112102221 is 122201211001099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 990100112102221 - 2¹⁷ = 990100111971149 is a prime.

It is a super-2 number, since 2×990100112102221² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990100112102281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715640125 + ... + 717022306.

It is an arithmetic number, because the mean of its divisors is an integer number (125471143132128).

Almost surely, 2^{990100112102221} is an apocalyptic number.

It is an amenable number.

990100112102221 is a deficient number, since it is larger than the sum of its proper divisors (13669032954803).

990100112102221 is a wasteful number, since it uses less digits than its factorization.

990100112102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432671971.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 990100112102221 in words is "nine hundred ninety trillion, one hundred billion, one hundred twelve million, one hundred two thousand, two hundred twenty-one".