1021312219 has 2 divisors, whose sum is σ = 1021312220. Its totient is φ = 1021312218.

The previous prime is 1021312177. The next prime is 1021312231. The reversal of 1021312219 is 9122131201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021312219 - 2¹³ = 1021304027 is a prime.

It is a super-2 number, since 2×1021312219² = 2086157297357407922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1021312219.

It is not a weakly prime, because it can be changed into another prime (1021312619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510656109 + 510656110.

It is an arithmetic number, because the mean of its divisors is an integer number (510656110).

Almost surely, 2^1021312219 is an apocalyptic number.

1021312219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021312219 is an equidigital number, since it uses as much as digits as its factorization.

1021312219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1021312219 is about 31957.9758276396. The cubic root of 1021312219 is about 1007.0541943328.

The spelling of 1021312219 in words is "one billion, twenty-one million, three hundred twelve thousand, two hundred nineteen".