1190921264251 has 2 divisors, whose sum is σ = 1190921264252. Its totient is φ = 1190921264250.

The previous prime is 1190921264167. The next prime is 1190921264303. The reversal of 1190921264251 is 1524621290911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1190921264251 - 2²¹ = 1190919167099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1190921264198 and 1190921264207.

It is not a weakly prime, because it can be changed into another prime (1190921261251) 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, 595460632125 + 595460632126.

It is an arithmetic number, because the mean of its divisors is an integer number (595460632126).

Almost surely, 2^{1190921264251} is an apocalyptic number.

1190921264251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1190921264251 is an equidigital number, since it uses as much as digits as its factorization.

1190921264251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 1190921264251 in words is "one trillion, one hundred ninety billion, nine hundred twenty-one million, two hundred sixty-four thousand, two hundred fifty-one".