1200022111110 has 64 divisors (see below), whose sum is σ = 2961420134400. Its totient is φ = 310985741952.

The previous prime is 1200022111091. The next prime is 1200022111117. The reversal of 1200022111110 is 111112200021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200022111117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287011 + ... + 1575569.

It is an arithmetic number, because the mean of its divisors is an integer number (46272189600).

Almost surely, 2^{1200022111110} is an apocalyptic number.

1200022111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200022111110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1480710067200).

1200022111110 is an abundant number, since it is smaller than the sum of its proper divisors (1761398023290).

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

1200022111110 is a wasteful number, since it uses less digits than its factorization.

1200022111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289445.

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

Adding to 1200022111110 its reverse (111112200021), we get a palindrome (1311134311131).

The spelling of 1200022111110 in words is "one trillion, two hundred billion, twenty-two million, one hundred eleven thousand, one hundred ten".