1000221222222 has 24 divisors (see below), whose sum is σ = 2225717495976. Its totient is φ = 324396071856.

The previous prime is 1000221222197. The next prime is 1000221222263. The reversal of 1000221222222 is 2222221220001.

1000221222222 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 221 + 222 + 222 = 666.

1000221222222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1000221222195 and 1000221222204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 750916168 + ... + 750917499.

It is an arithmetic number, because the mean of its divisors is an integer number (92738228999).

Almost surely, 2^{1000221222222} is an apocalyptic number.

1000221222222 is an abundant number, since it is smaller than the sum of its proper divisors (1225496273754).

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

1000221222222 is a wasteful number, since it uses less digits than its factorization.

1000221222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501833712 (or 1501833709 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1000221222222 its reverse (2222221220001), we get a palindrome (3222442442223).

The spelling of 1000221222222 in words is "one trillion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".