2221242040 has 16 divisors (see below), whose sum is σ = 4997794680. Its totient is φ = 888496800.

The previous prime is 2221242019. The next prime is 2221242059. The reversal of 2221242040 is 402421222.

It is a junction number, because it is equal to n+sod(n) for n = 2221241999 and 2221242017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27765486 + ... + 27765565.

Almost surely, 2^2221242040 is an apocalyptic number.

2221242040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221242040 is an abundant number, since it is smaller than the sum of its proper divisors (2776552640).

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

2221242040 is a wasteful number, since it uses less digits than its factorization.

2221242040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55531062 (or 55531058 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2221242040 is about 47130.0545299918. The cubic root of 2221242040 is about 1304.7639879902.

Adding to 2221242040 its reverse (402421222), we get a palindrome (2623663262).

The spelling of 2221242040 in words is "two billion, two hundred twenty-one million, two hundred forty-two thousand, forty".