4212323220 has 144 divisors (see below), whose sum is σ = 13763010240. Its totient is φ = 959809536.

The previous prime is 4212323207. The next prime is 4212323251. The reversal of 4212323220 is 223232124.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1018116 + ... + 1022244.

It is an arithmetic number, because the mean of its divisors is an integer number (95576460).

Almost surely, 2^4212323220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4212323220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6881505120).

4212323220 is an abundant number, since it is smaller than the sum of its proper divisors (9550687020).

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

4212323220 is a wasteful number, since it uses less digits than its factorization.

4212323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502 (or 4493 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4212323220 is about 64902.4130522125. The cubic root of 4212323220 is about 1615.0050922082.

Adding to 4212323220 its reverse (223232124), we get a palindrome (4435555344).

The spelling of 4212323220 in words is "four billion, two hundred twelve million, three hundred twenty-three thousand, two hundred twenty".