220221000012 has 48 divisors (see below), whose sum is σ = 582500898560. Its totient is φ = 64193974848.

The previous prime is 220221000011. The next prime is 220221000029. The reversal of 220221000012 is 210000122022.

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

It is not an unprimeable number, because it can be changed into a prime (220221000011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37146328 + ... + 37152255.

Almost surely, 2^220221000012 is an apocalyptic number.

It is an amenable number.

220221000012 is an abundant number, since it is smaller than the sum of its proper divisors (362279898548).

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

220221000012 is a wasteful number, since it uses less digits than its factorization.

220221000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74298622 (or 74298620 counting only the distinct ones).

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

Adding to 220221000012 its reverse (210000122022), we get a palindrome (430221122034).

The spelling of 220221000012 in words is "two hundred twenty billion, two hundred twenty-one million, twelve", and thus it is an aban number.