100020222221021 has 4 divisors (see below), whose sum is σ = 105284444443200. Its totient is φ = 94755999998844.

The previous prime is 100020222220999. The next prime is 100020222221033. The reversal of 100020222221021 is 120122222020001.

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 not a de Polignac number, because 100020222221021 - 2²² = 100020218026717 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 (100020222221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2632111111061 + ... + 2632111111098.

It is an arithmetic number, because the mean of its divisors is an integer number (26321111110800).

Almost surely, 2^{100020222221021} is an apocalyptic number.

It is an amenable number.

100020222221021 is a deficient number, since it is larger than the sum of its proper divisors (5264222222179).

100020222221021 is an equidigital number, since it uses as much as digits as its factorization.

100020222221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5264222222178.

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

Adding to 100020222221021 its reverse (120122222020001), we get a palindrome (220142444241022).

The spelling of 100020222221021 in words is "one hundred trillion, twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, twenty-one".