121101110121100 has 18 divisors (see below), whose sum is σ = 262789408963004. Its totient is φ = 48440444048400.

The previous prime is 121101110121049. The next prime is 121101110121133. The reversal of 121101110121100 is 1121011101121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 605505550506 + ... + 605505550705.

Almost surely, 2^{121101110121100} is an apocalyptic number.

121101110121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101110121100 is an abundant number, since it is smaller than the sum of its proper divisors (141688298841904).

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

121101110121100 is a wasteful number, since it uses less digits than its factorization.

121101110121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211011101225 (or 1211011101218 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 121101110121100 its reverse (1121011101121), we get a palindrome (122222121222221).

The spelling of 121101110121100 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred ten million, one hundred twenty-one thousand, one hundred".