100221202021 has 8 divisors (see below), whose sum is σ = 101937059840. Its totient is φ = 98519824368.

The previous prime is 100221202013. The next prime is 100221202043. The reversal of 100221202021 is 120202122001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100221202021 - 2³ = 100221202013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100221201992 and 100221202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221202121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3606081 + ... + 3633766.

It is an arithmetic number, because the mean of its divisors is an integer number (12742132480).

Almost surely, 2^100221202021 is an apocalyptic number.

It is an amenable number.

100221202021 is a deficient number, since it is larger than the sum of its proper divisors (1715857819).

100221202021 is a wasteful number, since it uses less digits than its factorization.

100221202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7240083.

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

Adding to 100221202021 its reverse (120202122001), we get a palindrome (220423324022).

The spelling of 100221202021 in words is "one hundred billion, two hundred twenty-one million, two hundred two thousand, twenty-one".