2221054040 has 32 divisors (see below), whose sum is σ = 5091666480. Its totient is φ = 871658112.

The previous prime is 2221054013. The next prime is 2221054049. The reversal of 2221054040 is 404501222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221054049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521714 + ... + 525953.

Almost surely, 2^2221054040 is an apocalyptic number.

2221054040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221054040 is an abundant number, since it is smaller than the sum of its proper divisors (2870612440).

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

2221054040 is a wasteful number, since it uses less digits than its factorization.

2221054040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047731 (or 1047727 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2221054040 is about 47128.0600067518. The cubic root of 2221054040 is about 1304.7271763707.

Adding to 2221054040 its reverse (404501222), we get a palindrome (2625555262).

The spelling of 2221054040 in words is "two billion, two hundred twenty-one million, fifty-four thousand, forty".