133222155 has 16 divisors (see below), whose sum is σ = 232533504. Its totient is φ = 64592480.

The previous prime is 133222151. The next prime is 133222181. The reversal of 133222155 is 551222331.

It is a happy number.

It is not a de Polignac number, because 133222155 - 2² = 133222151 is a prime.

It is a super-3 number, since 3×133222155³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (133222151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403539 + ... + 403868.

It is an arithmetic number, because the mean of its divisors is an integer number (14533344).

Almost surely, 2^133222155 is an apocalyptic number.

133222155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133222155 is a deficient number, since it is larger than the sum of its proper divisors (99311349).

133222155 is a wasteful number, since it uses less digits than its factorization.

133222155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807426.

The product of its digits is 1800, while the sum is 24.

The square root of 133222155 is about 11542.1902167656. The cubic root of 133222155 is about 510.7309204346.

Adding to 133222155 its reverse (551222331), we get a palindrome (684444486).

The spelling of 133222155 in words is "one hundred thirty-three million, two hundred twenty-two thousand, one hundred fifty-five".