992090209121 has 4 divisors (see below), whose sum is σ = 1082280228144. Its totient is φ = 901900190100.

The previous prime is 992090209111. The next prime is 992090209139. The reversal of 992090209121 is 121902090299.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121902090299 = 11 ⋅11082008209.

It is a cyclic number.

It is not a de Polignac number, because 992090209121 - 2¹⁰ = 992090208097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (992090209111) 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, 45095009495 + ... + 45095009516.

It is an arithmetic number, because the mean of its divisors is an integer number (270570057036).

Almost surely, 2^992090209121 is an apocalyptic number.

It is an amenable number.

992090209121 is a deficient number, since it is larger than the sum of its proper divisors (90190019023).

992090209121 is a wasteful number, since it uses less digits than its factorization.

992090209121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90190019022.

The product of its (nonzero) digits is 52488, while the sum is 44.

The spelling of 992090209121 in words is "nine hundred ninety-two billion, ninety million, two hundred nine thousand, one hundred twenty-one".