133212420334221 has 32 divisors (see below), whose sum is σ = 184940670759936. Its totient is φ = 85199050368000.

The previous prime is 133212420334219. The next prime is 133212420334309. The reversal of 133212420334221 is 122433024212331.

It is a happy number.

It is not a de Polignac number, because 133212420334221 - 2¹ = 133212420334219 is a prime.

It is a super-2 number, since 2×133212420334221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133212420334621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7146220 + ... + 17818341.

It is an arithmetic number, because the mean of its divisors is an integer number (5779395961248).

Almost surely, 2^{133212420334221} is an apocalyptic number.

It is an amenable number.

133212420334221 is a deficient number, since it is larger than the sum of its proper divisors (51728250425715).

133212420334221 is a wasteful number, since it uses less digits than its factorization.

133212420334221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24965093.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 133212420334221 its reverse (122433024212331), we get a palindrome (255645444546552).

The spelling of 133212420334221 in words is "one hundred thirty-three trillion, two hundred twelve billion, four hundred twenty million, three hundred thirty-four thousand, two hundred twenty-one".