2102222501 has 2 divisors, whose sum is σ = 2102222502. Its totient is φ = 2102222500.

The previous prime is 2102222483. The next prime is 2102222531. The reversal of 2102222501 is 1052222012.

It is a Cunningham number, because it is equal to 45850²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2102222500 + 1 = 45850^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102222501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2102222501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102222531) 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, 1051111250 + 1051111251.

It is an arithmetic number, because the mean of its divisors is an integer number (1051111251).

Almost surely, 2^2102222501 is an apocalyptic number.

It is an amenable number.

2102222501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102222501 is an equidigital number, since it uses as much as digits as its factorization.

2102222501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2102222501 is about 45850.0000109051. Note that the first 4 decimals coincide. The cubic root of 2102222501 is about 1281.0307657855.

Adding to 2102222501 its reverse (1052222012), we get a palindrome (3154444513).

The spelling of 2102222501 in words is "two billion, one hundred two million, two hundred twenty-two thousand, five hundred one".