2102201251 has 2 divisors, whose sum is σ = 2102201252. Its totient is φ = 2102201250.

The previous prime is 2102201237. The next prime is 2102201261. The reversal of 2102201251 is 1521022012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102201251 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102201201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051100625 + 1051100626.

It is an arithmetic number, because the mean of its divisors is an integer number (1051100626).

Almost surely, 2^2102201251 is an apocalyptic number.

2102201251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102201251 is an equidigital number, since it uses as much as digits as its factorization.

2102201251 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2102201251 is about 45849.7682764046. The cubic root of 2102201251 is about 1281.0264494020.

Adding to 2102201251 its reverse (1521022012), we get a palindrome (3623223263).

The spelling of 2102201251 in words is "two billion, one hundred two million, two hundred one thousand, two hundred fifty-one".