4221123212 has 6 divisors (see below), whose sum is σ = 7386965628. Its totient is φ = 2110561604.

The previous prime is 4221123211. The next prime is 4221123223. The reversal of 4221123212 is 2123211224.

It is not an unprimeable number, because it can be changed into a prime (4221123211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527640398 + ... + 527640405.

It is an arithmetic number, because the mean of its divisors is an integer number (1231160938).

Almost surely, 2^4221123212 is an apocalyptic number.

It is an amenable number.

4221123212 is a deficient number, since it is larger than the sum of its proper divisors (3165842416).

4221123212 is a wasteful number, since it uses less digits than its factorization.

4221123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055280807 (or 1055280805 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 4221123212 is about 64970.1717097931. The cubic root of 4221123212 is about 1616.1289491872.

Adding to 4221123212 its reverse (2123211224), we get a palindrome (6344334436).

The spelling of 4221123212 in words is "four billion, two hundred twenty-one million, one hundred twenty-three thousand, two hundred twelve".