121101000121111 has 4 divisors (see below), whose sum is σ = 123385924651752. Its totient is φ = 118816075590472.

The previous prime is 121101000121093. The next prime is 121101000121147. The reversal of 121101000121111 is 111121000101121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121101000121111 - 2³³ = 121092410186519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121101000121091 and 121101000121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101000121181) 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 3 ways as a sum of consecutive naturals, for example, 1142462265241 + ... + 1142462265346.

It is an arithmetic number, because the mean of its divisors is an integer number (30846481162938).

Almost surely, 2^{121101000121111} is an apocalyptic number.

121101000121111 is a deficient number, since it is larger than the sum of its proper divisors (2284924530641).

121101000121111 is an equidigital number, since it uses as much as digits as its factorization.

121101000121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284924530640.

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

Adding to 121101000121111 its reverse (111121000101121), we get a palindrome (232222000222232).

The spelling of 121101000121111 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred twenty-one thousand, one hundred eleven".