2131222 has 8 divisors (see below), whose sum is σ = 3384936. Its totient is φ = 1002912.

The previous prime is 2131193. The next prime is 2131223. The reversal of 2131222 is 2221312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31308 + ... + 31375.

It is an arithmetic number, because the mean of its divisors is an integer number (423117).

2^2131222 is an apocalyptic number.

2131222 is a deficient number, since it is larger than the sum of its proper divisors (1253714).

2131222 is a wasteful number, since it uses less digits than its factorization.

2131222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62702.

The product of its digits is 48, while the sum is 13.

The square root of 2131222 is about 1459.8705422057. The cubic root of 2131222 is about 128.6894358063.

Adding to 2131222 its reverse (2221312), we get a palindrome (4352534).

It can be divided in two parts, 21312 and 22, that multiplied together give a palindrome (468864).

The spelling of 2131222 in words is "two million, one hundred thirty-one thousand, two hundred twenty-two".