100421745843720 has 128 divisors (see below), whose sum is σ = 344339547690240. Its totient is φ = 22951113968640.

The previous prime is 100421745843667. The next prime is 100421745843737. The reversal of 100421745843720 is 27348547124001.

It is a self number, because there is not a number n which added to its sum of digits gives 100421745843720.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1629214 + ... + 14265266.

It is an arithmetic number, because the mean of its divisors is an integer number (2690152716330).

Almost surely, 2^{100421745843720} is an apocalyptic number.

100421745843720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100421745843720 is an abundant number, since it is smaller than the sum of its proper divisors (243917801846520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100421745843720 is a wasteful number, since it uses less digits than its factorization.

100421745843720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12645535 (or 12645531 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 100421745843720 in words is "one hundred trillion, four hundred twenty-one billion, seven hundred forty-five million, eight hundred forty-three thousand, seven hundred twenty".