1222011000157 has 2 divisors, whose sum is σ = 1222011000158. Its totient is φ = 1222011000156.

The previous prime is 1222011000079. The next prime is 1222011000193. The reversal of 1222011000157 is 7510001102221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 660861688356 + 561149311801 = 812934^2 + 749099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222011000157 is a prime.

It is a super-2 number, since 2×1222011000157² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222011001157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611005500078 + 611005500079.

It is an arithmetic number, because the mean of its divisors is an integer number (611005500079).

Almost surely, 2^{1222011000157} is an apocalyptic number.

It is an amenable number.

1222011000157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222011000157 is an equidigital number, since it uses as much as digits as its factorization.

1222011000157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 22.

Adding to 1222011000157 its reverse (7510001102221), we get a palindrome (8732012102378).

The spelling of 1222011000157 in words is "one trillion, two hundred twenty-two billion, eleven million, one hundred fifty-seven", and thus it is an aban number.