2221151040 has 84 divisors (see below), whose sum is σ = 7639844004. Its totient is φ = 592306176.

The previous prime is 2221151039. The next prime is 2221151057. The reversal of 2221151040 is 401511222.

It can be written as a sum of positive squares in 2 ways, for example, as 1231167744 + 989983296 = 35088^2 + 31464^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382737 + ... + 388496.

Almost surely, 2^2221151040 is an apocalyptic number.

2221151040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221151040 is an abundant number, since it is smaller than the sum of its proper divisors (5418692964).

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

2221151040 is a wasteful number, since it uses less digits than its factorization.

2221151040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771256 (or 771243 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2221151040 is about 47129.0891064107. The cubic root of 2221151040 is about 1304.7461698593.

Adding to 2221151040 its reverse (401511222), we get a palindrome (2622662262).

The spelling of 2221151040 in words is "two billion, two hundred twenty-one million, one hundred fifty-one thousand, forty".