172133222 has 8 divisors (see below), whose sum is σ = 258875136. Its totient is φ = 85841512.

The previous prime is 172133131. The next prime is 172133233. The reversal of 172133222 is 222331271.

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

It is a super-2 number, since 2×172133222² = 59259692232202568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111593 + ... + 113124.

It is an arithmetic number, because the mean of its divisors is an integer number (32359392).

Almost surely, 2^172133222 is an apocalyptic number.

172133222 is a deficient number, since it is larger than the sum of its proper divisors (86741914).

172133222 is a wasteful number, since it uses less digits than its factorization.

172133222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225102.

The product of its digits is 1008, while the sum is 23.

The square root of 172133222 is about 13119.9551066305. The cubic root of 172133222 is about 556.2733223904.

Adding to 172133222 its reverse (222331271), we get a palindrome (394464493).

It can be divided in two parts, 1721 and 33222, that added together give a palindrome (34943).

The spelling of 172133222 in words is "one hundred seventy-two million, one hundred thirty-three thousand, two hundred twenty-two".