1200011112112 has 20 divisors (see below), whose sum is σ = 2329680907000. Its totient is φ = 598803136128.

The previous prime is 1200011112101. The next prime is 1200011112127. The reversal of 1200011112112 is 2112111100021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200011112092 and 1200011112101.

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, 75143013 + ... + 75158980.

It is an arithmetic number, because the mean of its divisors is an integer number (116484045350).

Almost surely, 2^{1200011112112} is an apocalyptic number.

It is an amenable number.

1200011112112 is a deficient number, since it is larger than the sum of its proper divisors (1129669794888).

1200011112112 is a wasteful number, since it uses less digits than its factorization.

1200011112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150302500 (or 150302494 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1200011112112 its reverse (2112111100021), we get a palindrome (3312122212133).

The spelling of 1200011112112 in words is "one trillion, two hundred billion, eleven million, one hundred twelve thousand, one hundred twelve".