100221012002021 has 4 divisors (see below), whose sum is σ = 100780905924000. Its totient is φ = 99661118080044.

The previous prime is 100221012001909. The next prime is 100221012002053. The reversal of 100221012002021 is 120200210122001.

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 100221012002021 - 2¹⁴ = 100221011985637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100221012001987 and 100221012002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221012002071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279946960721 + ... + 279946961078.

It is an arithmetic number, because the mean of its divisors is an integer number (25195226481000).

Almost surely, 2^{100221012002021} is an apocalyptic number.

It is an amenable number.

100221012002021 is a deficient number, since it is larger than the sum of its proper divisors (559893921979).

100221012002021 is an equidigital number, since it uses as much as digits as its factorization.

100221012002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559893921978.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100221012002021 its reverse (120200210122001), we get a palindrome (220421222124022).

The spelling of 100221012002021 in words is "one hundred trillion, two hundred twenty-one billion, twelve million, two thousand, twenty-one".