100221124555 has 8 divisors (see below), whose sum is σ = 122236912944. Its totient is φ = 78862524000.

The previous prime is 100221124537. The next prime is 100221124603. The reversal of 100221124555 is 555421122001.

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

It is not a de Polignac number, because 100221124555 - 2¹³ = 100221116363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164296621 + ... + 164297230.

It is an arithmetic number, because the mean of its divisors is an integer number (15279614118).

Almost surely, 2^100221124555 is an apocalyptic number.

100221124555 is a deficient number, since it is larger than the sum of its proper divisors (22015788389).

100221124555 is an equidigital number, since it uses as much as digits as its factorization.

100221124555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328593917.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 100221124555 its reverse (555421122001), we get a palindrome (655642246556).

The spelling of 100221124555 in words is "one hundred billion, two hundred twenty-one million, one hundred twenty-four thousand, five hundred fifty-five".