102220010251 has 2 divisors, whose sum is σ = 102220010252. Its totient is φ = 102220010250.

The previous prime is 102220010227. The next prime is 102220010257. The reversal of 102220010251 is 152010022201.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (152010022201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102220010251 is a prime.

It is not a weakly prime, because it can be changed into another prime (102220010257) 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, 51110005125 + 51110005126.

It is an arithmetic number, because the mean of its divisors is an integer number (51110005126).

Almost surely, 2^102220010251 is an apocalyptic number.

102220010251 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220010251 is an equidigital number, since it uses as much as digits as its factorization.

102220010251 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.

Adding to 102220010251 its reverse (152010022201), we get a palindrome (254230032452).

The spelling of 102220010251 in words is "one hundred two billion, two hundred twenty million, ten thousand, two hundred fifty-one".