12011001021021 has 16 divisors (see below), whose sum is σ = 16026969208320. Its totient is φ = 8001184442160.

The previous prime is 12011001020999. The next prime is 12011001021049. The reversal of 12011001021021 is 12012010011021.

12011001021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12011001021021 - 2⁹ = 12011001020509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011001020988 and 12011001021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011001025021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49525426 + ... + 49767356.

It is an arithmetic number, because the mean of its divisors is an integer number (1001685575520).

Almost surely, 2^{12011001021021} is an apocalyptic number.

It is an amenable number.

12011001021021 is a deficient number, since it is larger than the sum of its proper divisors (4015968187299).

12011001021021 is a wasteful number, since it uses less digits than its factorization.

12011001021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254576.

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

Adding to 12011001021021 its reverse (12012010011021), we get a palindrome (24023011032042).

The spelling of 12011001021021 in words is "twelve trillion, eleven billion, one million, twenty-one thousand, twenty-one".