2154223099 has 4 divisors (see below), whose sum is σ = 2461969264. Its totient is φ = 1846476936.

The previous prime is 2154223067. The next prime is 2154223117. The reversal of 2154223099 is 9903224512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154223099 - 2⁵ = 2154223067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154223009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153873072 + ... + 153873085.

It is an arithmetic number, because the mean of its divisors is an integer number (615492316).

Almost surely, 2^2154223099 is an apocalyptic number.

2154223099 is a deficient number, since it is larger than the sum of its proper divisors (307746165).

2154223099 is an equidigital number, since it uses as much as digits as its factorization.

2154223099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307746164.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 2154223099 is about 46413.6089848656. The cubic root of 2154223099 is about 1291.5073818002.

The spelling of 2154223099 in words is "two billion, one hundred fifty-four million, two hundred twenty-three thousand, ninety-nine".