100020200221 has 4 divisors (see below), whose sum is σ = 100023693952. Its totient is φ = 100016706492.

The previous prime is 100020200207. The next prime is 100020200251. The reversal of 100020200221 is 122002020001.

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 a de Polignac number, because none of the positive numbers 2^k-100020200221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100020200198 and 100020200207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020200251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703565 + ... + 1761298.

It is an arithmetic number, because the mean of its divisors is an integer number (25005923488).

Almost surely, 2^100020200221 is an apocalyptic number.

It is an amenable number.

100020200221 is a deficient number, since it is larger than the sum of its proper divisors (3493731).

100020200221 is an equidigital number, since it uses as much as digits as its factorization.

100020200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493730.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 100020200221 its reverse (122002020001), we get a palindrome (222022220222).

The spelling of 100020200221 in words is "one hundred billion, twenty million, two hundred thousand, two hundred twenty-one".