1011221200012 has 12 divisors (see below), whose sum is σ = 1769650082200. Its totient is φ = 505606890816.

The previous prime is 1011221199883. The next prime is 1011221200039. The reversal of 1011221200012 is 2100021221101.

It is a junction number, because it is equal to n+sod(n) for n = 1011221199965 and 1011221200001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260637 + ... + 1445812.

Almost surely, 2^{1011221200012} is an apocalyptic number.

It is an amenable number.

1011221200012 is a deficient number, since it is larger than the sum of its proper divisors (758428882188).

1011221200012 is a wasteful number, since it uses less digits than its factorization.

1011221200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854600 (or 1854598 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1011221200012 its reverse (2100021221101), we get a palindrome (3111242421113).

The spelling of 1011221200012 in words is "one trillion, eleven billion, two hundred twenty-one million, two hundred thousand, twelve".