12021012010011 has 4 divisors (see below), whose sum is σ = 16028016013352. Its totient is φ = 8014008006672.

The previous prime is 12021012010003. The next prime is 12021012010079. The reversal of 12021012010011 is 11001021012021.

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

It is not a de Polignac number, because 12021012010011 - 2³ = 12021012010003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021012011011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003502001666 + ... + 2003502001671.

It is an arithmetic number, because the mean of its divisors is an integer number (4007004003338).

Almost surely, 2^{12021012010011} is an apocalyptic number.

12021012010011 is a deficient number, since it is larger than the sum of its proper divisors (4007004003341).

12021012010011 is an equidigital number, since it uses as much as digits as its factorization.

12021012010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007004003340.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12021012010011 its reverse (11001021012021), we get a palindrome (23022033022032).

The spelling of 12021012010011 in words is "twelve trillion, twenty-one billion, twelve million, ten thousand, eleven".