2122242391 has 2 divisors, whose sum is σ = 2122242392. Its totient is φ = 2122242390.

The previous prime is 2122242389. The next prime is 2122242403. The reversal of 2122242391 is 1932422212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2122242391 - 2¹ = 2122242389 is a prime.

Together with 2122242389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122243391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061121195 + 1061121196.

It is an arithmetic number, because the mean of its divisors is an integer number (1061121196).

Almost surely, 2^2122242391 is an apocalyptic number.

2122242391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122242391 is an equidigital number, since it uses as much as digits as its factorization.

2122242391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 2122242391 is about 46067.8021073287. The cubic root of 2122242391 is about 1285.0844299473.

The spelling of 2122242391 in words is "two billion, one hundred twenty-two million, two hundred forty-two thousand, three hundred ninety-one".