100221000200221 has 4 divisors (see below), whose sum is σ = 101489620456000. Its totient is φ = 98952379944444.

The previous prime is 100221000200179. The next prime is 100221000200267. The reversal of 100221000200221 is 122002000122001.

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 100221000200221 - 2²⁷ = 100220865982493 is a prime.

It is a super-2 number, since 2×100221000200221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221000200281) 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, 634310127771 + ... + 634310127928.

It is an arithmetic number, because the mean of its divisors is an integer number (25372405114000).

Almost surely, 2^{100221000200221} is an apocalyptic number.

It is an amenable number.

100221000200221 is a deficient number, since it is larger than the sum of its proper divisors (1268620255779).

100221000200221 is an equidigital number, since it uses as much as digits as its factorization.

100221000200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268620255778.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 100221000200221 its reverse (122002000122001), we get a palindrome (222223000322222).

The spelling of 100221000200221 in words is "one hundred trillion, two hundred twenty-one billion, two hundred thousand, two hundred twenty-one".