12261722 has 16 divisors (see below), whose sum is σ = 20757600. Its totient is φ = 5381040.

The previous prime is 12261713. The next prime is 12261791. The reversal of 12261722 is 22716221.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8972 + ... + 10247.

It is an arithmetic number, because the mean of its divisors is an integer number (1297350).

Almost surely, 2^12261722 is an apocalyptic number.

12261722 is a deficient number, since it is larger than the sum of its proper divisors (8495878).

12261722 is a wasteful number, since it uses less digits than its factorization.

12261722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19261.

The product of its digits is 672, while the sum is 23.

The square root of 12261722 is about 3501.6741710216. The cubic root of 12261722 is about 230.5953197802.

Adding to 12261722 its reverse (22716221), we get a palindrome (34977943).

The spelling of 12261722 in words is "twelve million, two hundred sixty-one thousand, seven hundred twenty-two".