12211124 has 6 divisors (see below), whose sum is σ = 21369474. Its totient is φ = 6105560.

The previous prime is 12211123. The next prime is 12211127. The reversal of 12211124 is 42111221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11764900 + 446224 = 3430^2 + 668^2 .

It is a super-2 number, since 2×12211124² = 298223098686752, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 12211099 and 12211108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211123) by changing a digit.

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 as a sum of consecutive naturals, namely, 1526387 + ... + 1526394.

It is an arithmetic number, because the mean of its divisors is an integer number (3561579).

Almost surely, 2^12211124 is an apocalyptic number.

It is an amenable number.

12211124 is a deficient number, since it is larger than the sum of its proper divisors (9158350).

12211124 is a wasteful number, since it uses less digits than its factorization.

12211124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052785 (or 3052783 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 12211124 is about 3494.4418724597. The cubic root of 12211124 is about 230.2776986023.

Adding to 12211124 its reverse (42111221), we get a palindrome (54322345).

It can be divided in two parts, 122 and 11124, that multiplied together give a triangular number (1357128 = T₁₆₄₇).

The spelling of 12211124 in words is "twelve million, two hundred eleven thousand, one hundred twenty-four".