212222212424 has 16 divisors (see below), whose sum is σ = 401856418620. Its totient is φ = 105060500800.

The previous prime is 212222212403. The next prime is 212222212457. The reversal of 212222212424 is 424212222212.

It can be written as a sum of positive squares in 2 ways, for example, as 211616560324 + 605652100 = 460018^2 + 24610^2 .

It is a super-2 number, since 2×212222212424² (a number of 23 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 212222212393 and 212222212402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131324819 + ... + 131326434.

Almost surely, 2^212222212424 is an apocalyptic number.

It is an amenable number.

212222212424 is a deficient number, since it is larger than the sum of its proper divisors (189634206196).

212222212424 is a wasteful number, since it uses less digits than its factorization.

212222212424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262651360 (or 262651356 counting only the distinct ones).

The product of its digits is 4096, while the sum is 26.

Adding to 212222212424 its reverse (424212222212), we get a palindrome (636434434636).

The spelling of 212222212424 in words is "two hundred twelve billion, two hundred twenty-two million, two hundred twelve thousand, four hundred twenty-four".