100121302100221 has 4 divisors (see below), whose sum is σ = 100121455346112. Its totient is φ = 100121148854332.

The previous prime is 100121302100159. The next prime is 100121302100227. The reversal of 100121302100221 is 122001203121001.

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 100121302100221 - 2³⁵ = 100086942361853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121302100195 and 100121302100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121302100227) 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, 75638725 + ... + 76951018.

It is an arithmetic number, because the mean of its divisors is an integer number (25030363836528).

Almost surely, 2^{100121302100221} is an apocalyptic number.

It is an amenable number.

100121302100221 is a deficient number, since it is larger than the sum of its proper divisors (153245891).

100121302100221 is an equidigital number, since it uses as much as digits as its factorization.

100121302100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153245890.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 100121302100221 its reverse (122001203121001), we get a palindrome (222122505221222).

The spelling of 100121302100221 in words is "one hundred trillion, one hundred twenty-one billion, three hundred two million, one hundred thousand, two hundred twenty-one".