100421745862135 has 4 divisors (see below), whose sum is σ = 120506095034568. Its totient is φ = 80337396689704.

The previous prime is 100421745862093. The next prime is 100421745862147. The reversal of 100421745862135 is 531268547124001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100421745862135 - 2¹⁹ = 100421745337847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10042174586209 + ... + 10042174586218.

It is an arithmetic number, because the mean of its divisors is an integer number (30126523758642).

Almost surely, 2^{100421745862135} is an apocalyptic number.

100421745862135 is a deficient number, since it is larger than the sum of its proper divisors (20084349172433).

100421745862135 is an equidigital number, since it uses as much as digits as its factorization.

100421745862135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20084349172432.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 100421745862135 in words is "one hundred trillion, four hundred twenty-one billion, seven hundred forty-five million, eight hundred sixty-two thousand, one hundred thirty-five".