100221001202021 has 4 divisors (see below), whose sum is σ = 114538287088032. Its totient is φ = 85903715316012.

The previous prime is 100221001201969. The next prime is 100221001202117. The reversal of 100221001202021 is 120202100122001.

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 100221001202021 - 2³⁸ = 99946123295077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100221001201987 and 100221001202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221001202921) 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, 7158642942995 + ... + 7158642943008.

It is an arithmetic number, because the mean of its divisors is an integer number (28634571772008).

Almost surely, 2^{100221001202021} is an apocalyptic number.

It is an amenable number.

100221001202021 is a deficient number, since it is larger than the sum of its proper divisors (14317285886011).

100221001202021 is an equidigital number, since it uses as much as digits as its factorization.

100221001202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14317285886010.

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

Adding to 100221001202021 its reverse (120202100122001), we get a palindrome (220423101324022).

The spelling of 100221001202021 in words is "one hundred trillion, two hundred twenty-one billion, one million, two hundred two thousand, twenty-one".