2120201243 has 2 divisors, whose sum is σ = 2120201244. Its totient is φ = 2120201242.

The previous prime is 2120201221. The next prime is 2120201261. The reversal of 2120201243 is 3421020212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120201243 - 2⁶ = 2120201179 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120201263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060100621 + 1060100622.

It is an arithmetic number, because the mean of its divisors is an integer number (1060100622).

Almost surely, 2^2120201243 is an apocalyptic number.

2120201243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120201243 is an equidigital number, since it uses as much as digits as its factorization.

2120201243 is an evil number, because the sum of its binary digits is even.

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

The square root of 2120201243 is about 46045.6430403572. The cubic root of 2120201243 is about 1284.6723047170.

Adding to 2120201243 its reverse (3421020212), we get a palindrome (5541221455).

The spelling of 2120201243 in words is "two billion, one hundred twenty million, two hundred one thousand, two hundred forty-three".