4221253245244 has 48 divisors (see below), whose sum is σ = 8719996020736. Its totient is φ = 1749715473600.

The previous prime is 4221253245229. The next prime is 4221253245271. The reversal of 4221253245244 is 4425423521224.

It is a junction number, because it is equal to n+sod(n) for n = 4221253245197 and 4221253245206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33259 + ... + 2905789.

Almost surely, 2^{4221253245244} 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 4221253245244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4359998010368).

4221253245244 is an abundant number, since it is smaller than the sum of its proper divisors (4498742775492).

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

4221253245244 is a wasteful number, since it uses less digits than its factorization.

4221253245244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874266 (or 2874264 counting only the distinct ones).

The product of its digits is 614400, while the sum is 40.

Adding to 4221253245244 its reverse (4425423521224), we get a palindrome (8646676766468).

The spelling of 4221253245244 in words is "four trillion, two hundred twenty-one billion, two hundred fifty-three million, two hundred forty-five thousand, two hundred forty-four".