121100002001111 has 8 divisors (see below), whose sum is σ = 138400069702560. Its totient is φ = 103799951153568.

The previous prime is 121100002001087. The next prime is 121100002001171. The reversal of 121100002001111 is 111100200001121.

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-121100002001111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121100002001092 and 121100002001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100002001171) 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, 22337705 + ... + 27224493.

It is an arithmetic number, because the mean of its divisors is an integer number (17300008712820).

Almost surely, 2^{121100002001111} is an apocalyptic number.

121100002001111 is a deficient number, since it is larger than the sum of its proper divisors (17300067701449).

121100002001111 is an equidigital number, since it uses as much as digits as its factorization.

121100002001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426953.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121100002001111 its reverse (111100200001121), we get a palindrome (232200202002232).

The spelling of 121100002001111 in words is "one hundred twenty-one trillion, one hundred billion, two million, one thousand, one hundred eleven".