5421221244 has 24 divisors (see below), whose sum is σ = 14055018320. Its totient is φ = 1807073712.

The previous prime is 5421221243. The next prime is 5421221249. The reversal of 5421221244 is 4421221245.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5421221243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25098139 + ... + 25098354.

Almost surely, 2^5421221244 is an apocalyptic number.

5421221244 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

5421221244 is an abundant number, since it is smaller than the sum of its proper divisors (8633797076).

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

5421221244 is a wasteful number, since it uses less digits than its factorization.

5421221244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50196506 (or 50196498 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 5421221244 is about 73628.9429776090. The cubic root of 5421221244 is about 1756.7058350234.

Adding to 5421221244 its reverse (4421221245), we get a palindrome (9842442489).

Subtracting from 5421221244 its reverse (4421221245), we obtain a palindrome (999999999).

The spelling of 5421221244 in words is "five billion, four hundred twenty-one million, two hundred twenty-one thousand, two hundred forty-four".