1122121111100 has 72 divisors (see below), whose sum is σ = 2677283309568. Its totient is φ = 404831044800.

The previous prime is 1122121111091. The next prime is 1122121111147. The reversal of 1122121111100 is 11111212211.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3876482 + ... + 4155881.

Almost surely, 2^{1122121111100} is an apocalyptic number.

1122121111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122121111100 is an abundant number, since it is smaller than the sum of its proper divisors (1555162198468).

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

1122121111100 is a wasteful number, since it uses less digits than its factorization.

1122121111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8032515 (or 8032508 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1122121111100 its reverse (11111212211), we get a palindrome (1133232323311).

It can be divided in two parts, 112 and 2121111100, that added together give a palindrome (2121111212).

The spelling of 1122121111100 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, one hundred".