2102251 has 2 divisors, whose sum is σ = 2102252. Its totient is φ = 2102250.

The previous prime is 2102249. The next prime is 2102257. The reversal of 2102251 is 1522012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102251 - 2¹ = 2102249 is a prime.

Together with 2102249, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2102257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051125 + 1051126.

It is an arithmetic number, because the mean of its divisors is an integer number (1051126).

2^2102251 is an apocalyptic number.

2102251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102251 is an equidigital number, since it uses as much as digits as its factorization.

2102251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2102251 is about 1449.9141353887. The cubic root of 2102251 is about 128.1036554569.

Adding to 2102251 its reverse (1522012), we get a palindrome (3624263).

The spelling of 2102251 in words is "two million, one hundred two thousand, two hundred fifty-one".