121100011101 has 24 divisors (see below), whose sum is σ = 185445039104. Its totient is φ = 76017437280.

The previous prime is 121100011093. The next prime is 121100011103. The reversal of 121100011101 is 101110001121.

It is not a de Polignac number, because 121100011101 - 2³ = 121100011093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100011103) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 5855221 + ... + 5875866.

Almost surely, 2^121100011101 is an apocalyptic number.

It is an amenable number.

121100011101 is a deficient number, since it is larger than the sum of its proper divisors (64345028003).

121100011101 is a wasteful number, since it uses less digits than its factorization.

121100011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11731161 (or 11731158 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 121100011101 its reverse (101110001121), we get a palindrome (222210012222).

The spelling of 121100011101 in words is "one hundred twenty-one billion, one hundred million, eleven thousand, one hundred one".