12821531620041 has 32 divisors (see below), whose sum is σ = 19101522718080. Its totient is φ = 8499736824768.

The previous prime is 12821531620021. The next prime is 12821531620043. The reversal of 12821531620041 is 14002613512821.

12821531620041 is a `hidden beast` number, since 1 + 2 + 8 + 21 + 5 + 3 + 1 + 620 + 0 + 4 + 1 = 666.

It is not a de Polignac number, because 12821531620041 - 2¹⁵ = 12821531587273 is a prime.

It is a super-2 number, since 2×12821531620041² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12821531619978 and 12821531620005.

It is not an unprimeable number, because it can be changed into a prime (12821531620043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9285015 + ... + 10576131.

It is an arithmetic number, because the mean of its divisors is an integer number (596922584940).

Almost surely, 2^{12821531620041} is an apocalyptic number.

It is an amenable number.

12821531620041 is a deficient number, since it is larger than the sum of its proper divisors (6279991098039).

12821531620041 is a wasteful number, since it uses less digits than its factorization.

12821531620041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293190 (or 1293184 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 12821531620041 in words is "twelve trillion, eight hundred twenty-one billion, five hundred thirty-one million, six hundred twenty thousand, forty-one".