12010020011 has 4 divisors (see below), whose sum is σ = 13101840024. Its totient is φ = 10918200000.

The previous prime is 12010019993. The next prime is 12010020047. The reversal of 12010020011 is 11002001021.

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 12010020011 - 2²⁶ = 11942911147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12010080011) 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, 545909990 + ... + 545910011.

It is an arithmetic number, because the mean of its divisors is an integer number (3275460006).

Almost surely, 2^12010020011 is an apocalyptic number.

12010020011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12010020011 is a deficient number, since it is larger than the sum of its proper divisors (1091820013).

12010020011 is a wasteful number, since it uses less digits than its factorization.

12010020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091820012.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12010020011 its reverse (11002001021), we get a palindrome (23012021032).

The spelling of 12010020011 in words is "twelve billion, ten million, twenty thousand, eleven".