100020222221 has 4 divisors (see below), whose sum is σ = 100021092000. Its totient is φ = 100019352444.

The previous prime is 100020222209. The next prime is 100020222223. The reversal of 100020222221 is 122222020001.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 100020222221 - 2⁶ = 100020222157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100020222196 and 100020222205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020222223) 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, 230321 + ... + 503078.

It is an arithmetic number, because the mean of its divisors is an integer number (25005273000).

Almost surely, 2^100020222221 is an apocalyptic number.

It is an amenable number.

100020222221 is a deficient number, since it is larger than the sum of its proper divisors (869779).

100020222221 is an equidigital number, since it uses as much as digits as its factorization.

100020222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869778.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 100020222221 its reverse (122222020001), we get a palindrome (222242242222).

The spelling of 100020222221 in words is "one hundred billion, twenty million, two hundred twenty-two thousand, two hundred twenty-one".