121012001111011 has 4 divisors (see below), whose sum is σ = 123826233695032. Its totient is φ = 118197768526992.

The previous prime is 121012001111003. The next prime is 121012001111021. The reversal of 121012001111011 is 110111100210121.

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 121012001111011 - 2³ = 121012001111003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121012001110982 and 121012001111000.

It is not an unprimeable number, because it can be changed into a prime (121012001111021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407116291946 + ... + 1407116292031.

It is an arithmetic number, because the mean of its divisors is an integer number (30956558423758).

Almost surely, 2^{121012001111011} is an apocalyptic number.

121012001111011 is a deficient number, since it is larger than the sum of its proper divisors (2814232584021).

121012001111011 is an equidigital number, since it uses as much as digits as its factorization.

121012001111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814232584020.

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

Adding to 121012001111011 its reverse (110111100210121), we get a palindrome (231123101321132).

The spelling of 121012001111011 in words is "one hundred twenty-one trillion, twelve billion, one million, one hundred eleven thousand, eleven".