100221010021 has 8 divisors (see below), whose sum is σ = 109354341600. Its totient is φ = 91091400240.

The previous prime is 100221009983. The next prime is 100221010031. The reversal of 100221010021 is 120010122001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100221010021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221010031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873991 + ... + 981988.

It is an arithmetic number, because the mean of its divisors is an integer number (13669292700).

Almost surely, 2^100221010021 is an apocalyptic number.

100221010021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100221010021 is a deficient number, since it is larger than the sum of its proper divisors (9133331579).

100221010021 is a wasteful number, since it uses less digits than its factorization.

100221010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860899.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100221010021 its reverse (120010122001), we get a palindrome (220231132022).

The spelling of 100221010021 in words is "one hundred billion, two hundred twenty-one million, ten thousand, twenty-one".