1222142101 has 2 divisors, whose sum is σ = 1222142102. Its totient is φ = 1222142100.

The previous prime is 1222142083. The next prime is 1222142113. The reversal of 1222142101 is 1012412221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1195361476 + 26780625 = 34574^2 + 5175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222142101 - 2¹¹ = 1222140053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222142161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611071050 + 611071051.

It is an arithmetic number, because the mean of its divisors is an integer number (611071051).

Almost surely, 2^1222142101 is an apocalyptic number.

It is an amenable number.

1222142101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222142101 is an equidigital number, since it uses as much as digits as its factorization.

1222142101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1222142101 is about 34959.1490314052. The cubic root of 1222142101 is about 1069.1547466180.

Adding to 1222142101 its reverse (1012412221), we get a palindrome (2234554322).

The spelling of 1222142101 in words is "one billion, two hundred twenty-two million, one hundred forty-two thousand, one hundred one".