12021101012011 has 24 divisors (see below), whose sum is σ = 14876903543040. Its totient is φ = 9510938682336.

The previous prime is 12021101012009. The next prime is 12021101012017. The reversal of 12021101012011 is 11021010112021.

It is a happy number.

It is not a de Polignac number, because 12021101012011 - 2¹ = 12021101012009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 12021101011982 and 12021101012000.

It is not an unprimeable number, because it can be changed into a prime (12021101012017) 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 23 ways as a sum of consecutive naturals, for example, 50559936 + ... + 50797138.

It is an arithmetic number, because the mean of its divisors is an integer number (619870980960).

Almost surely, 2^{12021101012011} is an apocalyptic number.

12021101012011 is a deficient number, since it is larger than the sum of its proper divisors (2855802531029).

12021101012011 is a wasteful number, since it uses less digits than its factorization.

12021101012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280075 (or 280062 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12021101012011 its reverse (11021010112021), we get a palindrome (23042111124032).

The spelling of 12021101012011 in words is "twelve trillion, twenty-one billion, one hundred one million, twelve thousand, eleven".