1111211222120 has 64 divisors (see below), whose sum is σ = 2567529619200. Its totient is φ = 432623773440.

The previous prime is 1111211222117. The next prime is 1111211222129. The reversal of 1111211222120 is 212221121111.

It is not an unprimeable number, because it can be changed into a prime (1111211222129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1292510 + ... + 1973069.

It is an arithmetic number, because the mean of its divisors is an integer number (40117650300).

Almost surely, 2^{1111211222120} is an apocalyptic number.

1111211222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111211222120 is an abundant number, since it is smaller than the sum of its proper divisors (1456318397080).

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

1111211222120 is a wasteful number, since it uses less digits than its factorization.

1111211222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265818 (or 3265814 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1111211222120 its reverse (212221121111), we get a palindrome (1323432343231).

It can be divided in two parts, 1111211 and 222120, that added together give a palindrome (1333331).

The spelling of 1111211222120 in words is "one trillion, one hundred eleven billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twenty".