4221212121224 has 16 divisors (see below), whose sum is σ = 9045454545600. Its totient is φ = 1809090909072.

The previous prime is 4221212121223. The next prime is 4221212121283.

4221212121224 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 4221212121193 and 4221212121202.

It is not an unprimeable number, because it can be changed into a prime (4221212121223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37689393884 + ... + 37689393995.

It is an arithmetic number, because the mean of its divisors is an integer number (565340909100).

Almost surely, 2^{4221212121224} is an apocalyptic number.

It is an amenable number.

4221212121224 is an abundant number, since it is smaller than the sum of its proper divisors (4824242424376).

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

4221212121224 is a wasteful number, since it uses less digits than its factorization.

4221212121224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75378787892 (or 75378787888 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

The spelling of 4221212121224 in words is "four trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twenty-four".