2122100243 has 4 divisors (see below), whose sum is σ = 2167251360. Its totient is φ = 2076949128.

The previous prime is 2122100203. The next prime is 2122100251. The reversal of 2122100243 is 3420012212.

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 2122100243 - 2¹⁰ = 2122099219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122100203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22575488 + ... + 22575581.

It is an arithmetic number, because the mean of its divisors is an integer number (541812840).

Almost surely, 2^2122100243 is an apocalyptic number.

2122100243 is a deficient number, since it is larger than the sum of its proper divisors (45151117).

2122100243 is an equidigital number, since it uses as much as digits as its factorization.

2122100243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45151116.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2122100243 is about 46066.2592685796. The cubic root of 2122100243 is about 1285.0557376137.

Adding to 2122100243 its reverse (3420012212), we get a palindrome (5542112455).

The spelling of 2122100243 in words is "two billion, one hundred twenty-two million, one hundred thousand, two hundred forty-three".