2122100251 has 2 divisors, whose sum is σ = 2122100252. Its totient is φ = 2122100250.

The previous prime is 2122100203. The next prime is 2122100287. The reversal of 2122100251 is 1520012212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2122100251 - 2²¹ = 2120003099 is a prime.

It is not a weakly prime, because it can be changed into another prime (2122100051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061050125 + 1061050126.

It is an arithmetic number, because the mean of its divisors is an integer number (1061050126).

Almost surely, 2^2122100251 is an apocalyptic number.

2122100251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122100251 is an equidigital number, since it uses as much as digits as its factorization.

2122100251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2122100251 is about 46066.2593554111. The cubic root of 2122100251 is about 1285.0557392285.

Adding to 2122100251 its reverse (1520012212), we get a palindrome (3642112463).

The spelling of 2122100251 in words is "two billion, one hundred twenty-two million, one hundred thousand, two hundred fifty-one".