12065311356021 has 96 divisors (see below), whose sum is σ = 24216973747200. Its totient is φ = 5588532195840.

The previous prime is 12065311356019. The next prime is 12065311356073.

12065311356021 is a `hidden beast` number, since 1 + 2 + 0 + 6 + 5 + 3 + 11 + 35 + 602 + 1 = 666.

12065311356021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12065311356021 - 2¹ = 12065311356019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12065311356221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 26727031 + ... + 27174708.

It is an arithmetic number, because the mean of its divisors is an integer number (252260143200).

Almost surely, 2^{12065311356021} is an apocalyptic number.

12065311356021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12065311356021 is an abundant number, since it is smaller than the sum of its proper divisors (12151662391179).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12065311356021 is a wasteful number, since it uses less digits than its factorization.

12065311356021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53901799 (or 53901796 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 12065311356021 in words is "twelve trillion, sixty-five billion, three hundred eleven million, three hundred fifty-six thousand, twenty-one".