133122231 has 64 divisors (see below), whose sum is σ = 223948800. Its totient is φ = 77464800.

The previous prime is 133122217. The next prime is 133122259. The reversal of 133122231 is 132221331.

It is not a de Polignac number, because 133122231 - 2⁷ = 133122103 is a prime.

It is a super-2 number, since 2×133122231² = 35443056772834722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133122931) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1244080 + ... + 1244186.

It is an arithmetic number, because the mean of its divisors is an integer number (3499200).

Almost surely, 2^133122231 is an apocalyptic number.

133122231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133122231 is a deficient number, since it is larger than the sum of its proper divisors (90826569).

133122231 is a wasteful number, since it uses less digits than its factorization.

133122231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 251 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 133122231 is about 11537.8607635904. The cubic root of 133122231 is about 510.6031963302.

Adding to 133122231 its reverse (132221331), we get a palindrome (265343562).

The spelling of 133122231 in words is "one hundred thirty-three million, one hundred twenty-two thousand, two hundred thirty-one".