992190200021 has 4 divisors (see below), whose sum is σ = 1050554329452. Its totient is φ = 933826070592.

The previous prime is 992190200011. The next prime is 992190200033. The reversal of 992190200021 is 120002091299.

992190200021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 901571139121 + 90619060900 = 949511^2 + 301030^2 .

It is a cyclic number.

It is not a de Polignac number, because 992190200021 - 2¹⁸ = 992189937877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992190200011) 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, 29182064690 + ... + 29182064723.

It is an arithmetic number, because the mean of its divisors is an integer number (262638582363).

Almost surely, 2^992190200021 is an apocalyptic number.

It is an amenable number.

992190200021 is a deficient number, since it is larger than the sum of its proper divisors (58364129431).

992190200021 is a wasteful number, since it uses less digits than its factorization.

992190200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58364129430.

The product of its (nonzero) digits is 5832, while the sum is 35.

The spelling of 992190200021 in words is "nine hundred ninety-two billion, one hundred ninety million, two hundred thousand, twenty-one".