12211254424 has 8 divisors (see below), whose sum is σ = 22896102060. Its totient is φ = 6105627208.

The previous prime is 12211254353. The next prime is 12211254463. The reversal of 12211254424 is 42445211221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12211254424² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211254392 and 12211254401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 763203394 + ... + 763203409.

Almost surely, 2^12211254424 is an apocalyptic number.

It is an amenable number.

12211254424 is a deficient number, since it is larger than the sum of its proper divisors (10684847636).

12211254424 is a wasteful number, since it uses less digits than its factorization.

12211254424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526406809 (or 1526406805 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

Adding to 12211254424 its reverse (42445211221), we get a palindrome (54656465645).

The spelling of 12211254424 in words is "twelve billion, two hundred eleven million, two hundred fifty-four thousand, four hundred twenty-four".