100100200120021 has 8 divisors (see below), whose sum is σ = 101127489615360. Its totient is φ = 99073976834352.

The previous prime is 100100200119949. The next prime is 100100200120027. The reversal of 100100200120021 is 120021002001001.

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 100100200120021 - 2²⁵ = 100100166565589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100100200120027) 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, 266363686 + ... + 266739223.

It is an arithmetic number, because the mean of its divisors is an integer number (12640936201920).

Almost surely, 2^{100100200120021} is an apocalyptic number.

It is an amenable number.

100100200120021 is a deficient number, since it is larger than the sum of its proper divisors (1027289495339).

100100200120021 is a wasteful number, since it uses less digits than its factorization.

100100200120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533104835.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100100200120021 its reverse (120021002001001), we get a palindrome (220121202121022).

The spelling of 100100200120021 in words is "one hundred trillion, one hundred billion, two hundred million, one hundred twenty thousand, twenty-one".