121121221101100 has 36 divisors (see below), whose sum is σ = 286726963409208. Its totient is φ = 44044080400000.

The previous prime is 121121221101071. The next prime is 121121221101113. The reversal of 121121221101100 is 1101122121121.

121121221101100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55055099401 + ... + 55055101600.

It is an arithmetic number, because the mean of its divisors is an integer number (7964637872478).

Almost surely, 2^{121121221101100} is an apocalyptic number.

121121221101100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121221101100 is an abundant number, since it is smaller than the sum of its proper divisors (165605742308108).

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

121121221101100 is a wasteful number, since it uses less digits than its factorization.

121121221101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110110201026 (or 110110201019 counting only the distinct ones).

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

Adding to 121121221101100 its reverse (1101122121121), we get a palindrome (122222343222221).

The spelling of 121121221101100 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, one hundred".