100120621843 has 8 divisors (see below), whose sum is σ = 109340077680. Its totient is φ = 90920762880.

The previous prime is 100120621837. The next prime is 100120621889. The reversal of 100120621843 is 348126021001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100120621843 - 2²¹ = 100118524691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100120621243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4888530 + ... + 4908967.

It is an arithmetic number, because the mean of its divisors is an integer number (13667509710).

Almost surely, 2^100120621843 is an apocalyptic number.

100120621843 is a deficient number, since it is larger than the sum of its proper divisors (9219455837).

100120621843 is an equidigital number, since it uses as much as digits as its factorization.

100120621843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9798437.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 100120621843 its reverse (348126021001), we get a palindrome (448246642844).

The spelling of 100120621843 in words is "one hundred billion, one hundred twenty million, six hundred twenty-one thousand, eight hundred forty-three".