100144203233221 has 4 divisors (see below), whose sum is σ = 114450517980832. Its totient is φ = 85837888485612.

The previous prime is 100144203233197. The next prime is 100144203233231. The reversal of 100144203233221 is 122332302441001.

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 100144203233221 - 2⁵ = 100144203233189 is a prime.

It is a super-2 number, since 2×100144203233221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100144203233221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100144203233231) 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, 7153157373795 + ... + 7153157373808.

It is an arithmetic number, because the mean of its divisors is an integer number (28612629495208).

Almost surely, 2^{100144203233221} is an apocalyptic number.

It is an amenable number.

100144203233221 is a deficient number, since it is larger than the sum of its proper divisors (14306314747611).

100144203233221 is an equidigital number, since it uses as much as digits as its factorization.

100144203233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14306314747610.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 100144203233221 its reverse (122332302441001), we get a palindrome (222476505674222).

The spelling of 100144203233221 in words is "one hundred trillion, one hundred forty-four billion, two hundred three million, two hundred thirty-three thousand, two hundred twenty-one".