2221232040 has 96 divisors (see below), whose sum is σ = 7337421000. Its totient is φ = 582612480.

The previous prime is 2221232033. The next prime is 2221232047. The reversal of 2221232040 is 402321222.

It is an interprime number because it is at equal distance from previous prime (2221232033) and next prime (2221232047).

It can be written as a sum of positive squares in 4 ways, for example, as 1902180996 + 319051044 = 43614^2 + 17862^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2221232047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28615 + ... + 72534.

Almost surely, 2^2221232040 is an apocalyptic number.

2221232040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221232040 is an abundant number, since it is smaller than the sum of its proper divisors (5116188960).

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

2221232040 is a wasteful number, since it uses less digits than its factorization.

2221232040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101227 (or 101220 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2221232040 is about 47129.9484404556. The cubic root of 2221232040 is about 1304.7620299777.

Adding to 2221232040 its reverse (402321222), we get a palindrome (2623553262).

The spelling of 2221232040 in words is "two billion, two hundred twenty-one million, two hundred thirty-two thousand, forty".