100421266691 has 2 divisors, whose sum is σ = 100421266692. Its totient is φ = 100421266690.

The previous prime is 100421266639. The next prime is 100421266697. The reversal of 100421266691 is 196662124001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100421266691 is a prime.

It is not a weakly prime, because it can be changed into another prime (100421266697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50210633345 + 50210633346.

It is an arithmetic number, because the mean of its divisors is an integer number (50210633346).

Almost surely, 2^100421266691 is an apocalyptic number.

100421266691 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421266691 is an equidigital number, since it uses as much as digits as its factorization.

100421266691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 100421266691 in words is "one hundred billion, four hundred twenty-one million, two hundred sixty-six thousand, six hundred ninety-one".