1120121021100 has 72 divisors (see below), whose sum is σ = 3240994938048. Its totient is φ = 298688667200.

The previous prime is 1120121020987. The next prime is 1120121021111. The reversal of 1120121021100 is 11201210211.

It is a super-2 number, since 2×1120121021100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 13310155 + ... + 13394045.

It is an arithmetic number, because the mean of its divisors is an integer number (45013818584).

Almost surely, 2^{1120121021100} is an apocalyptic number.

1120121021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120121021100 is an abundant number, since it is smaller than the sum of its proper divisors (2120873916948).

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

1120121021100 is a wasteful number, since it uses less digits than its factorization.

1120121021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128415 (or 128408 counting only the distinct ones).

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

Adding to 1120121021100 its reverse (11201210211), we get a palindrome (1131322231311).

1120121021100 divided by its reverse (11201210211) gives a square (100 = 10²).

The spelling of 1120121021100 in words is "one trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, one hundred".