1211222102159 has 2 divisors, whose sum is σ = 1211222102160. Its totient is φ = 1211222102158.

The previous prime is 1211222102119. The next prime is 1211222102197. The reversal of 1211222102159 is 9512012221121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211222102159 - 2²⁴ = 1211205324943 is a prime.

It is a super-2 number, since 2×1211222102159² (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 (1211222102119) 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, 605611051079 + 605611051080.

It is an arithmetic number, because the mean of its divisors is an integer number (605611051080).

Almost surely, 2^{1211222102159} is an apocalyptic number.

1211222102159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211222102159 is an equidigital number, since it uses as much as digits as its factorization.

1211222102159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 29.

The spelling of 1211222102159 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, one hundred two thousand, one hundred fifty-nine".