100122220200021 has 4 divisors (see below), whose sum is σ = 133496293600032. Its totient is φ = 66748146800012.

The previous prime is 100122220199999. The next prime is 100122220200059. The reversal of 100122220200021 is 120002022221001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100122220200021 - 2¹⁰ = 100122220198997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122220200071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16687036700001 + ... + 16687036700006.

It is an arithmetic number, because the mean of its divisors is an integer number (33374073400008).

Almost surely, 2^{100122220200021} is an apocalyptic number.

It is an amenable number.

100122220200021 is a deficient number, since it is larger than the sum of its proper divisors (33374073400011).

100122220200021 is an equidigital number, since it uses as much as digits as its factorization.

100122220200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33374073400010.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 100122220200021 its reverse (120002022221001), we get a palindrome (220124242421022).

The spelling of 100122220200021 in words is "one hundred trillion, one hundred twenty-two billion, two hundred twenty million, two hundred thousand, twenty-one".