12213511424 has 18 divisors (see below), whose sum is σ = 24379314330. Its totient is φ = 6106755584.

The previous prime is 12213511403. The next prime is 12213511463. The reversal of 12213511424 is 42411531221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11073773824 + 1139737600 = 105232^2 + 33760^2 .

It is a super-2 number, since 2×12213511424² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12213511393 and 12213511402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23854259 + ... + 23854770.

Almost surely, 2^12213511424 is an apocalyptic number.

It is an amenable number.

12213511424 is a deficient number, since it is larger than the sum of its proper divisors (12165802906).

12213511424 is an frugal number, since it uses more digits than its factorization.

12213511424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47709045 (or 47709031 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The spelling of 12213511424 in words is "twelve billion, two hundred thirteen million, five hundred eleven thousand, four hundred twenty-four".