1021284196249 has 2 divisors, whose sum is σ = 1021284196250. Its totient is φ = 1021284196248.

The previous prime is 1021284196211. The next prime is 1021284196279. The reversal of 1021284196249 is 9426914821201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 611043946249 + 410240250000 = 781693^2 + 640500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021284196249 - 2²⁷ = 1021149978521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021284196279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510642098124 + 510642098125.

It is an arithmetic number, because the mean of its divisors is an integer number (510642098125).

Almost surely, 2^{1021284196249} is an apocalyptic number.

It is an amenable number.

1021284196249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021284196249 is an equidigital number, since it uses as much as digits as its factorization.

1021284196249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 49.

The spelling of 1021284196249 in words is "one trillion, twenty-one billion, two hundred eighty-four million, one hundred ninety-six thousand, two hundred forty-nine".