100442132331221 has 4 divisors (see below), whose sum is σ = 100442847754272. Its totient is φ = 100441416908172.

The previous prime is 100442132331181. The next prime is 100442132331293. The reversal of 100442132331221 is 122133231244001.

It is a happy number.

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 100442132331221 - 2⁶ = 100442132331157 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 (100442132331521) 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, 357500891 + ... + 357781736.

It is an arithmetic number, because the mean of its divisors is an integer number (25110711938568).

Almost surely, 2^{100442132331221} is an apocalyptic number.

It is an amenable number.

100442132331221 is a deficient number, since it is larger than the sum of its proper divisors (715423051).

100442132331221 is an equidigital number, since it uses as much as digits as its factorization.

100442132331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715423050.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 100442132331221 its reverse (122133231244001), we get a palindrome (222575363575222).

The spelling of 100442132331221 in words is "one hundred trillion, four hundred forty-two billion, one hundred thirty-two million, three hundred thirty-one thousand, two hundred twenty-one".