1012211934691 has 2 divisors, whose sum is σ = 1012211934692. Its totient is φ = 1012211934690.

The previous prime is 1012211934659. The next prime is 1012211934703. The reversal of 1012211934691 is 1964391122101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012211934691 - 2⁵ = 1012211934659 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012211934491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506105967345 + 506105967346.

It is an arithmetic number, because the mean of its divisors is an integer number (506105967346).

Almost surely, 2^{1012211934691} is an apocalyptic number.

1012211934691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012211934691 is an equidigital number, since it uses as much as digits as its factorization.

1012211934691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 1012211934691 in words is "one trillion, twelve billion, two hundred eleven million, nine hundred thirty-four thousand, six hundred ninety-one".