2124100291 has 4 divisors (see below), whose sum is σ = 2127782152. Its totient is φ = 2120418432.

The previous prime is 2124100267. The next prime is 2124100313. The reversal of 2124100291 is 1920014212.

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 2124100291 - 2⁹ = 2124099779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124100201) 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, 1840065 + ... + 1841218.

It is an arithmetic number, because the mean of its divisors is an integer number (531945538).

Almost surely, 2^2124100291 is an apocalyptic number.

2124100291 is a deficient number, since it is larger than the sum of its proper divisors (3681861).

2124100291 is an equidigital number, since it uses as much as digits as its factorization.

2124100291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681860.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2124100291 is about 46087.9625390405. The cubic root of 2124100291 is about 1285.4593261716.

The spelling of 2124100291 in words is "two billion, one hundred twenty-four million, one hundred thousand, two hundred ninety-one".