1200001111110 has 48 divisors (see below), whose sum is σ = 3128149200384. Its totient is φ = 319164777216.

The previous prime is 1200001111087. The next prime is 1200001111117. The reversal of 1200001111110 is 111111000021.

It is a super-3 number, since 3×1200001111110³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1200001111092 and 1200001111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200001111117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17371987 + ... + 17440926.

It is an arithmetic number, because the mean of its divisors is an integer number (65169775008).

Almost surely, 2^{1200001111110} is an apocalyptic number.

1200001111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200001111110 is an abundant number, since it is smaller than the sum of its proper divisors (1928148089274).

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

1200001111110 is a wasteful number, since it uses less digits than its factorization.

1200001111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34813309 (or 34813306 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1200001111110 its reverse (111111000021), we get a palindrome (1311112111131).

The spelling of 1200001111110 in words is "one trillion, two hundred billion, one million, one hundred eleven thousand, one hundred ten".