2421222043212 has 144 divisors (see below), whose sum is σ = 7164173336320. Its totient is φ = 675200313216.

The previous prime is 2421222043193. The next prime is 2421222043307. The reversal of 2421222043212 is 2123402221242.

2421222043212 is a `hidden beast` number, since 2 + 4 + 2 + 1 + 2 + 220 + 432 + 1 + 2 = 666.

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, 1182543 + ... + 2498169.

Almost surely, 2^{2421222043212} 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 2421222043212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3582086668160).

2421222043212 is an abundant number, since it is smaller than the sum of its proper divisors (4742951293108).

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

2421222043212 is a wasteful number, since it uses less digits than its factorization.

2421222043212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315820 (or 1315815 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 2421222043212 its reverse (2123402221242), we get a palindrome (4544624264454).

The spelling of 2421222043212 in words is "two trillion, four hundred twenty-one billion, two hundred twenty-two million, forty-three thousand, two hundred twelve".