100111333232221 has 4 divisors (see below), whose sum is σ = 102241361598912. Its totient is φ = 97981304865532.

The previous prime is 100111333232213. The next prime is 100111333232321. The reversal of 100111333232221 is 122232333111001.

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 100111333232221 - 2³ = 100111333232213 is a prime.

It is a super-2 number, since 2×100111333232221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111333232321) 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, 1065014183275 + ... + 1065014183368.

It is an arithmetic number, because the mean of its divisors is an integer number (25560340399728).

Almost surely, 2^{100111333232221} is an apocalyptic number.

It is an amenable number.

100111333232221 is a deficient number, since it is larger than the sum of its proper divisors (2130028366691).

100111333232221 is an equidigital number, since it uses as much as digits as its factorization.

100111333232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130028366690.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 100111333232221 its reverse (122232333111001), we get a palindrome (222343666343222).

The spelling of 100111333232221 in words is "one hundred trillion, one hundred eleven billion, three hundred thirty-three million, two hundred thirty-two thousand, two hundred twenty-one".