100120202022221 has 4 divisors (see below), whose sum is σ = 105389686339200. Its totient is φ = 94850717705244.

The previous prime is 100120202022209. The next prime is 100120202022227. The reversal of 100120202022221 is 122220202021001.

It is a happy number.

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 100120202022221 - 2²² = 100120197827917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100120202022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120202022227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2634742158461 + ... + 2634742158498.

It is an arithmetic number, because the mean of its divisors is an integer number (26347421584800).

Almost surely, 2^{100120202022221} is an apocalyptic number.

It is an amenable number.

100120202022221 is a deficient number, since it is larger than the sum of its proper divisors (5269484316979).

100120202022221 is an equidigital number, since it uses as much as digits as its factorization.

100120202022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5269484316978.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100120202022221 its reverse (122220202021001), we get a palindrome (222340404043222).

The spelling of 100120202022221 in words is "one hundred trillion, one hundred twenty billion, two hundred two million, twenty-two thousand, two hundred twenty-one".