133722222 has 16 divisors (see below), whose sum is σ = 270042240. Its totient is φ = 44141112.

The previous prime is 133722137. The next prime is 133722223. The reversal of 133722222 is 222227331.

133722222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 133722192 and 133722201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133722223) 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, 107572 + ... + 108807.

It is an arithmetic number, because the mean of its divisors is an integer number (16877640).

Almost surely, 2^133722222 is an apocalyptic number.

133722222 is an abundant number, since it is smaller than the sum of its proper divisors (136320018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133722222 is a wasteful number, since it uses less digits than its factorization.

133722222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216487.

The product of its digits is 2016, while the sum is 24.

The square root of 133722222 is about 11563.8324961926. The cubic root of 133722222 is about 511.3691545809.

Adding to 133722222 its reverse (222227331), we get a palindrome (355949553).

The spelling of 133722222 in words is "one hundred thirty-three million, seven hundred twenty-two thousand, two hundred twenty-two".