1000221111012 has 24 divisors (see below), whose sum is σ = 2355260723200. Its totient is φ = 330348256416.

The previous prime is 1000221110989. The next prime is 1000221111059. The reversal of 1000221111012 is 2101111220001.

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

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, 382346212 + ... + 382348827.

Almost surely, 2^{1000221111012} is an apocalyptic number.

1000221111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000221111012 is an abundant number, since it is smaller than the sum of its proper divisors (1355039612188).

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

1000221111012 is a wasteful number, since it uses less digits than its factorization.

1000221111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764695155 (or 764695153 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1000221111012 its reverse (2101111220001), we get a palindrome (3101332331013).

The spelling of 1000221111012 in words is "one trillion, two hundred twenty-one million, one hundred eleven thousand, twelve".