2290121999 has 8 divisors (see below), whose sum is σ = 2500778880. Its totient is φ = 2079875800.

The previous prime is 2290121989. The next prime is 2290122013. The reversal of 2290121999 is 9991210922.

It is a happy number.

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 2290121999 - 2¹⁶ = 2290056463 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 (2290121989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90947 + ... + 113364.

It is an arithmetic number, because the mean of its divisors is an integer number (312597360).

Almost surely, 2^2290121999 is an apocalyptic number.

2290121999 is a deficient number, since it is larger than the sum of its proper divisors (210656881).

2290121999 is a wasteful number, since it uses less digits than its factorization.

2290121999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205341.

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

The square root of 2290121999 is about 47855.2191406538. The cubic root of 2290121999 is about 1318.1136967166.

The spelling of 2290121999 in words is "two billion, two hundred ninety million, one hundred twenty-one thousand, nine hundred ninety-nine".