2221331340 has 24 divisors (see below), whose sum is σ = 6219727920. Its totient is φ = 592355008.

The previous prime is 2221331327. The next prime is 2221331341. The reversal of 2221331340 is 431331222.

It is not an unprimeable number, because it can be changed into a prime (2221331341) 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, 18511035 + ... + 18511154.

It is an arithmetic number, because the mean of its divisors is an integer number (259155330).

Almost surely, 2^2221331340 is an apocalyptic number.

2221331340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221331340 is an abundant number, since it is smaller than the sum of its proper divisors (3998396580).

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

2221331340 is a wasteful number, since it uses less digits than its factorization.

2221331340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37022201 (or 37022199 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2221331340 is about 47131.0018989624. The cubic root of 2221331340 is about 1304.7814727819.

Adding to 2221331340 its reverse (431331222), we get a palindrome (2652662562).

The spelling of 2221331340 in words is "two billion, two hundred twenty-one million, three hundred thirty-one thousand, three hundred forty".