100222112020021 has 4 divisors (see below), whose sum is σ = 100272148024032. Its totient is φ = 100172076016012.

The previous prime is 100222112020013. The next prime is 100222112020049. The reversal of 100222112020021 is 120020211222001.

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 100222112020021 - 2³ = 100222112020013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100222112019977 and 100222112020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222112020321) 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, 25017999001 + ... + 25018003006.

It is an arithmetic number, because the mean of its divisors is an integer number (25068037006008).

Almost surely, 2^{100222112020021} is an apocalyptic number.

It is an amenable number.

100222112020021 is a deficient number, since it is larger than the sum of its proper divisors (50036004011).

100222112020021 is an equidigital number, since it uses as much as digits as its factorization.

100222112020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50036004010.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100222112020021 its reverse (120020211222001), we get a palindrome (220242323242022).

The spelling of 100222112020021 in words is "one hundred trillion, two hundred twenty-two billion, one hundred twelve million, twenty thousand, twenty-one".