211223210424 has 32 divisors (see below), whose sum is σ = 528986106000. Its totient is φ = 70283992832.

The previous prime is 211223210413. The next prime is 211223210437. The reversal of 211223210424 is 424012322112.

211223210424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 211223210394 and 211223210403.

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 in 7 ways as a sum of consecutive naturals, for example, 7720059 + ... + 7747370.

Almost surely, 2^211223210424 is an apocalyptic number.

211223210424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

211223210424 is an abundant number, since it is smaller than the sum of its proper divisors (317762895576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211223210424 is a wasteful number, since it uses less digits than its factorization.

211223210424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15468007 (or 15468003 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 211223210424 its reverse (424012322112), we get a palindrome (635235532536).

The spelling of 211223210424 in words is "two hundred eleven billion, two hundred twenty-three million, two hundred ten thousand, four hundred twenty-four".