4021223212 has 24 divisors (see below), whose sum is σ = 7158135600. Its totient is φ = 1976093760.

The previous prime is 4021223209. The next prime is 4021223257. The reversal of 4021223212 is 2123221204.

It is a super-2 number, since 2×4021223212² = 32340472241455193888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4021223212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342414 + ... + 353962.

It is an arithmetic number, because the mean of its divisors is an integer number (298255650).

Almost surely, 2^4021223212 is an apocalyptic number.

It is an amenable number.

4021223212 is a deficient number, since it is larger than the sum of its proper divisors (3136912388).

4021223212 is a wasteful number, since it uses less digits than its factorization.

4021223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13041 (or 13039 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4021223212 is about 63413.1154572932. The cubic root of 4021223212 is about 1590.2035803303.

Adding to 4021223212 its reverse (2123221204), we get a palindrome (6144444416).

The spelling of 4021223212 in words is "four billion, twenty-one million, two hundred twenty-three thousand, two hundred twelve".