133220223231 has 8 divisors (see below), whose sum is σ = 177688673280. Its totient is φ = 88782627672.

The previous prime is 133220223193. The next prime is 133220223233. The reversal of 133220223231 is 132322022331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133220223231 - 2¹⁰ = 133220222207 is a prime.

It is a super-2 number, since 2×133220223231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133220223233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7703545 + ... + 7720818.

It is an arithmetic number, because the mean of its divisors is an integer number (22211084160).

Almost surely, 2^133220223231 is an apocalyptic number.

133220223231 is a deficient number, since it is larger than the sum of its proper divisors (44468450049).

133220223231 is a wasteful number, since it uses less digits than its factorization.

133220223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15427245.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 133220223231 its reverse (132322022331), we get a palindrome (265542245562).

Subtracting from 133220223231 its reverse (132322022331), we obtain a square (898200900 = 29970²).

The spelling of 133220223231 in words is "one hundred thirty-three billion, two hundred twenty million, two hundred twenty-three thousand, two hundred thirty-one".