12001010121011 has 4 divisors (see below), whose sum is σ = 12002012807400. Its totient is φ = 12000007434624.

The previous prime is 12001010120999. The next prime is 12001010121049. The reversal of 12001010121011 is 11012101010021.

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-12001010121011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001010120983 and 12001010121001.

It is not an unprimeable number, because it can be changed into a prime (12001010121071) 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, 501325241 + ... + 501349178.

It is an arithmetic number, because the mean of its divisors is an integer number (3000503201850).

Almost surely, 2^{12001010121011} is an apocalyptic number.

12001010121011 is a deficient number, since it is larger than the sum of its proper divisors (1002686389).

12001010121011 is a wasteful number, since it uses less digits than its factorization.

12001010121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002686388.

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

Adding to 12001010121011 its reverse (11012101010021), we get a palindrome (23013111131032).

The spelling of 12001010121011 in words is "twelve trillion, one billion, ten million, one hundred twenty-one thousand, eleven".