133221311101 has 4 divisors (see below), whose sum is σ = 133223847772. Its totient is φ = 133218774432.

The previous prime is 133221311051. The next prime is 133221311117. The reversal of 133221311101 is 101113122331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18926605476 + 114294705625 = 137574^2 + 338075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133221311101 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 (133221311401) 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, 1187856 + ... + 1295161.

It is an arithmetic number, because the mean of its divisors is an integer number (33305961943).

Almost surely, 2^133221311101 is an apocalyptic number.

It is an amenable number.

133221311101 is a deficient number, since it is larger than the sum of its proper divisors (2536671).

133221311101 is an equidigital number, since it uses as much as digits as its factorization.

133221311101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536670.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 133221311101 its reverse (101113122331), we get a palindrome (234334433432).

The spelling of 133221311101 in words is "one hundred thirty-three billion, two hundred twenty-one million, three hundred eleven thousand, one hundred one".