1210100222257 has 2 divisors, whose sum is σ = 1210100222258. Its totient is φ = 1210100222256.

The previous prime is 1210100222213. The next prime is 1210100222263. The reversal of 1210100222257 is 7522220010121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970784560656 + 239315661601 = 985284^2 + 489199^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210100222257 - 2⁷ = 1210100222129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210100222267) 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, 605050111128 + 605050111129.

It is an arithmetic number, because the mean of its divisors is an integer number (605050111129).

Almost surely, 2^{1210100222257} is an apocalyptic number.

It is an amenable number.

1210100222257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210100222257 is an equidigital number, since it uses as much as digits as its factorization.

1210100222257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 1210100222257 its reverse (7522220010121), we get a palindrome (8732320232378).

The spelling of 1210100222257 in words is "one trillion, two hundred ten billion, one hundred million, two hundred twenty-two thousand, two hundred fifty-seven".