4221223636 has 24 divisors (see below), whose sum is σ = 8449418880. Its totient is φ = 1807601952.

The previous prime is 4221223619. The next prime is 4221223651. The reversal of 4221223636 is 6363221224.

It is a junction number, because it is equal to n+sod(n) for n = 4221223598 and 4221223607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27391 + ... + 95878.

It is an arithmetic number, because the mean of its divisors is an integer number (352059120).

Almost surely, 2^4221223636 is an apocalyptic number.

It is an amenable number.

4221223636 is an abundant number, since it is smaller than the sum of its proper divisors (4228195244).

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

4221223636 is a wasteful number, since it uses less digits than its factorization.

4221223636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124503 (or 124501 counting only the distinct ones).

The product of its digits is 20736, while the sum is 31.

The square root of 4221223636 is about 64970.9445521612. The cubic root of 4221223636 is about 1616.1417654321.

The spelling of 4221223636 in words is "four billion, two hundred twenty-one million, two hundred twenty-three thousand, six hundred thirty-six".