1200111122120 has 32 divisors (see below), whose sum is σ = 2817652201920. Its totient is φ = 459172950720.

The previous prime is 1200111122117. The next prime is 1200111122141. The reversal of 1200111122120 is 212211110021.

It is a super-2 number, since 2×1200111122120² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200111122095 and 1200111122104.

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, 652233386 + ... + 652235225.

It is an arithmetic number, because the mean of its divisors is an integer number (88051631310).

Almost surely, 2^{1200111122120} is an apocalyptic number.

1200111122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200111122120 is an abundant number, since it is smaller than the sum of its proper divisors (1617541079800).

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

1200111122120 is a wasteful number, since it uses less digits than its factorization.

1200111122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304468645 (or 1304468641 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1200111122120 its reverse (212211110021), we get a palindrome (1412322232141).

It can be divided in two parts, 1200111 and 122120, that added together give a palindrome (1322231).

The spelling of 1200111122120 in words is "one trillion, two hundred billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty".