2221533340 has 96 divisors (see below), whose sum is σ = 5172330240. Its totient is φ = 796262400.

The previous prime is 2221533337. The next prime is 2221533341. The reversal of 2221533340 is 433351222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221533341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2888476 + ... + 2889244.

It is an arithmetic number, because the mean of its divisors is an integer number (53878440).

Almost surely, 2^2221533340 is an apocalyptic number.

2221533340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221533340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2586165120).

2221533340 is an abundant number, since it is smaller than the sum of its proper divisors (2950796900).

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

2221533340 is a wasteful number, since it uses less digits than its factorization.

2221533340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 2221533340 is about 47133.1448133901. The cubic root of 2221533340 is about 1304.8210223174.

Adding to 2221533340 its reverse (433351222), we get a palindrome (2654884562).

It can be divided in two parts, 22215 and 33340, that added together give a palindrome (55555).

The spelling of 2221533340 in words is "two billion, two hundred twenty-one million, five hundred thirty-three thousand, three hundred forty".