100220102200021 has 16 divisors (see below), whose sum is σ = 110897141731200. Its totient is φ = 90086813436928.

The previous prime is 100220102199911. The next prime is 100220102200093. The reversal of 100220102200021 is 120002201022001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100220102200021 - 2⁹ = 100220102199509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100220102199974 and 100220102200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220102200921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194216836 + ... + 194732173.

It is an arithmetic number, because the mean of its divisors is an integer number (6931071358200).

Almost surely, 2^{100220102200021} is an apocalyptic number.

It is an amenable number.

100220102200021 is a deficient number, since it is larger than the sum of its proper divisors (10677039531179).

100220102200021 is a wasteful number, since it uses less digits than its factorization.

100220102200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388949708.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 100220102200021 its reverse (120002201022001), we get a palindrome (220222303222022).

The spelling of 100220102200021 in words is "one hundred trillion, two hundred twenty billion, one hundred two million, two hundred thousand, twenty-one".