2124321099 has 4 divisors (see below), whose sum is σ = 2832428136. Its totient is φ = 1416214064.

The previous prime is 2124321091. The next prime is 2124321103. The reversal of 2124321099 is 9901234212.

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 2124321099 - 2³ = 2124321091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2124321091) 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, 354053514 + ... + 354053519.

It is an arithmetic number, because the mean of its divisors is an integer number (708107034).

Almost surely, 2^2124321099 is an apocalyptic number.

2124321099 is a deficient number, since it is larger than the sum of its proper divisors (708107037).

2124321099 is an equidigital number, since it uses as much as digits as its factorization.

2124321099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708107036.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 2124321099 is about 46090.3579829882. The cubic root of 2124321099 is about 1285.5038673623.

It can be divided in two parts, 212432 and 1099, that added together give a triangular number (213531 = T₆₅₃).

The spelling of 2124321099 in words is "two billion, one hundred twenty-four million, three hundred twenty-one thousand, ninety-nine".