100200220021 has 4 divisors (see below), whose sum is σ = 109309330944. Its totient is φ = 91091109100.

The previous prime is 100200220007. The next prime is 100200220039. The reversal of 100200220021 is 120022002001.

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 100200220021 - 2⁷ = 100200219893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100200220121) 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, 4554555445 + ... + 4554555466.

It is an arithmetic number, because the mean of its divisors is an integer number (27327332736).

Almost surely, 2^100200220021 is an apocalyptic number.

100200220021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100200220021 is a deficient number, since it is larger than the sum of its proper divisors (9109110923).

100200220021 is an equidigital number, since it uses as much as digits as its factorization.

100200220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9109110922.

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

Adding to 100200220021 its reverse (120022002001), we get a palindrome (220222222022).

The spelling of 100200220021 in words is "one hundred billion, two hundred million, two hundred twenty thousand, twenty-one".