4000221012 has 24 divisors (see below), whose sum is σ = 9825104800. Its totient is φ = 1263227616.

The previous prime is 4000220999. The next prime is 4000221061. The reversal of 4000221012 is 2101220004.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent 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, 8772187 + ... + 8772642.

Almost surely, 2^4000221012 is an apocalyptic number.

It is an amenable number.

4000221012 is an abundant number, since it is smaller than the sum of its proper divisors (5824883788).

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

4000221012 is a wasteful number, since it uses less digits than its factorization.

4000221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17544855 (or 17544853 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 4000221012 is about 63247.3004325086. The cubic root of 4000221012 is about 1587.4302876532.

Adding to 4000221012 its reverse (2101220004), we get a palindrome (6101441016).

The spelling of 4000221012 in words is "four billion, two hundred twenty-one thousand, twelve".