102210222251 has 2 divisors, whose sum is σ = 102210222252. Its totient is φ = 102210222250.

The previous prime is 102210222223. The next prime is 102210222287. The reversal of 102210222251 is 152222012201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102210222251 is a prime.

It is not a weakly prime, because it can be changed into another prime (102210222551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105111125 + 51105111126.

It is an arithmetic number, because the mean of its divisors is an integer number (51105111126).

Almost surely, 2^102210222251 is an apocalyptic number.

102210222251 is a deficient number, since it is larger than the sum of its proper divisors (1).

102210222251 is an equidigital number, since it uses as much as digits as its factorization.

102210222251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 102210222251 its reverse (152222012201), we get a palindrome (254432234452).

The spelling of 102210222251 in words is "one hundred two billion, two hundred ten million, two hundred twenty-two thousand, two hundred fifty-one".