133200313101221 has 4 divisors (see below), whose sum is σ = 134172578160492. Its totient is φ = 132228048041952.

The previous prime is 133200313101203. The next prime is 133200313101241. The reversal of 133200313101221 is 122101313002331.

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 62260779302500 + 70939533798721 = 7890550^2 + 8422561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133200313101221 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 (133200313101241) 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, 486132529430 + ... + 486132529703.

It is an arithmetic number, because the mean of its divisors is an integer number (33543144540123).

Almost surely, 2^{133200313101221} is an apocalyptic number.

It is an amenable number.

133200313101221 is a deficient number, since it is larger than the sum of its proper divisors (972265059271).

133200313101221 is an equidigital number, since it uses as much as digits as its factorization.

133200313101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972265059270.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 133200313101221 its reverse (122101313002331), we get a palindrome (255301626103552).

The spelling of 133200313101221 in words is "one hundred thirty-three trillion, two hundred billion, three hundred thirteen million, one hundred one thousand, two hundred twenty-one".