990222221022123 has 8 divisors (see below), whose sum is σ = 1320296997840336. Its totient is φ = 660147795776000.

The previous prime is 990222221022119. The next prime is 990222221022131. The reversal of 990222221022123 is 321220122222099.

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 990222221022123 - 2² = 990222221022119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990222221022113) 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, 81249318 + ... + 92638523.

It is an arithmetic number, because the mean of its divisors is an integer number (165037124730042).

Almost surely, 2^{990222221022123} is an apocalyptic number.

990222221022123 is a deficient number, since it is larger than the sum of its proper divisors (330074776818213).

990222221022123 is a wasteful number, since it uses less digits than its factorization.

990222221022123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175786045.

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 990222221022123 in words is "nine hundred ninety trillion, two hundred twenty-two billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-three".