3129222 has 8 divisors (see below), whose sum is σ = 6258456. Its totient is φ = 1043072.

The previous prime is 3129221. The next prime is 3129223. The reversal of 3129222 is 2229213.

It is an interprime number because it is at equal distance from previous prime (3129221) and next prime (3129223).

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

3129222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260763 + ... + 260774.

It is an arithmetic number, because the mean of its divisors is an integer number (782307).

Almost surely, 2^3129222 is an apocalyptic number.

3129222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3129222 is a wasteful number, since it uses less digits than its factorization.

3129222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521542.

The product of its digits is 432, while the sum is 21.

The square root of 3129222 is about 1768.9607118305. The cubic root of 3129222 is about 146.2666983637.

Subtracting from 3129222 its reverse (2229213), we obtain a palindrome (900009).

The spelling of 3129222 in words is "three million, one hundred twenty-nine thousand, two hundred twenty-two".