4221220040 has 32 divisors (see below), whose sum is σ = 9501399360. Its totient is φ = 1687838400.

The previous prime is 4221220027. The next prime is 4221220051. The reversal of 4221220040 is 400221224.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92735 + ... + 130545.

It is an arithmetic number, because the mean of its divisors is an integer number (296918730).

Almost surely, 2^4221220040 is an apocalyptic number.

4221220040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4221220040 is an abundant number, since it is smaller than the sum of its proper divisors (5280179320).

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

4221220040 is a wasteful number, since it uses less digits than its factorization.

4221220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40613 (or 40609 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 4221220040 is about 64970.9168782464. The cubic root of 4221220040 is about 1616.1413065093.

Adding to 4221220040 its reverse (400221224), we get a palindrome (4621441264).

The spelling of 4221220040 in words is "four billion, two hundred twenty-one million, two hundred twenty thousand, forty".