121000111101011 has 8 divisors (see below), whose sum is σ = 122940920912880. Its totient is φ = 119066957344512.

The previous prime is 121000111100989. The next prime is 121000111101019. The reversal of 121000111101011 is 110101111000121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121000111101011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000111100983 and 121000111101001.

It is not an unprimeable number, because it can be changed into a prime (121000111101019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1913981981 + ... + 1914045198.

It is an arithmetic number, because the mean of its divisors is an integer number (15367615114110).

Almost surely, 2^{121000111101011} is an apocalyptic number.

121000111101011 is a deficient number, since it is larger than the sum of its proper divisors (1940809811869).

121000111101011 is an equidigital number, since it uses as much as digits as its factorization.

121000111101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828027685.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 121000111101011 its reverse (110101111000121), we get a palindrome (231101222101132).

The spelling of 121000111101011 in words is "one hundred twenty-one trillion, one hundred eleven million, one hundred one thousand, eleven".