1000221220012 has 48 divisors (see below), whose sum is σ = 2020755795520. Its totient is φ = 424321016832.

The previous prime is 1000221219997. The next prime is 1000221220043. The reversal of 1000221220012 is 2100221220001.

It is a happy number.

1000221220012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1000221219974 and 1000221220001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2994088 + ... + 3311344.

Almost surely, 2^{1000221220012} is an apocalyptic number.

It is an amenable number.

1000221220012 is an abundant number, since it is smaller than the sum of its proper divisors (1020534575508).

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

1000221220012 is a wasteful number, since it uses less digits than its factorization.

1000221220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318410 (or 318408 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1000221220012 its reverse (2100221220001), we get a palindrome (3100442440013).

The spelling of 1000221220012 in words is "one trillion, two hundred twenty-one million, two hundred twenty thousand, twelve".