100201010201221 has 4 divisors (see below), whose sum is σ = 100346018899744. Its totient is φ = 100056001502700.

The previous prime is 100201010201219. The next prime is 100201010201249. The reversal of 100201010201221 is 122102010102001.

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 100201010201221 - 2¹ = 100201010201219 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 (100201010211221) 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, 72504348225 + ... + 72504349606.

It is an arithmetic number, because the mean of its divisors is an integer number (25086504724936).

Almost surely, 2^{100201010201221} is an apocalyptic number.

It is an amenable number.

100201010201221 is a deficient number, since it is larger than the sum of its proper divisors (145008698523).

100201010201221 is an equidigital number, since it uses as much as digits as its factorization.

100201010201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145008698522.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100201010201221 its reverse (122102010102001), we get a palindrome (222303020303222).

The spelling of 100201010201221 in words is "one hundred trillion, two hundred one billion, ten million, two hundred one thousand, two hundred twenty-one".