121000121100011 has 4 divisors (see below), whose sum is σ = 121042562394024. Its totient is φ = 120957679806000.

The previous prime is 121000121099983. The next prime is 121000121100017. The reversal of 121000121100011 is 110001121000121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121000121100011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000121099965 and 121000121100001.

It is not an unprimeable number, because it can be changed into a prime (121000121100017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21220642730 + ... + 21220648431.

It is an arithmetic number, because the mean of its divisors is an integer number (30260640598506).

Almost surely, 2^{121000121100011} is an apocalyptic number.

121000121100011 is a deficient number, since it is larger than the sum of its proper divisors (42441294013).

121000121100011 is an equidigital number, since it uses as much as digits as its factorization.

121000121100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42441294012.

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

Adding to 121000121100011 its reverse (110001121000121), we get a palindrome (231001242100132).

The spelling of 121000121100011 in words is "one hundred twenty-one trillion, one hundred twenty-one million, one hundred thousand, eleven".