100421745858199 has 2 divisors, whose sum is σ = 100421745858200. Its totient is φ = 100421745858198.

The previous prime is 100421745858197. The next prime is 100421745858349. The reversal of 100421745858199 is 991858547124001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100421745858199 - 2¹ = 100421745858197 is a prime.

It is a super-2 number, since 2×100421745858199² (a number of 29 digits) contains 22 as substring.

Together with 100421745858197, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 100421745858199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100421745858197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50210872929099 + 50210872929100.

It is an arithmetic number, because the mean of its divisors is an integer number (50210872929100).

Almost surely, 2^{100421745858199} is an apocalyptic number.

100421745858199 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421745858199 is an equidigital number, since it uses as much as digits as its factorization.

100421745858199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29030400, while the sum is 64.

The spelling of 100421745858199 in words is "one hundred trillion, four hundred twenty-one billion, seven hundred forty-five million, eight hundred fifty-eight thousand, one hundred ninety-nine".