21012121314411 has 32 divisors (see below), whose sum is σ = 29122185523200. Its totient is φ = 13461708902400.

The previous prime is 21012121314343. The next prime is 21012121314419. The reversal of 21012121314411 is 11441312121012.

It is not a de Polignac number, because 21012121314411 - 2¹⁰ = 21012121313387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21012121314419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6583890 + ... + 9239688.

It is an arithmetic number, because the mean of its divisors is an integer number (910068297600).

Almost surely, 2^{21012121314411} is an apocalyptic number.

21012121314411 is a deficient number, since it is larger than the sum of its proper divisors (8110064208789).

21012121314411 is a wasteful number, since it uses less digits than its factorization.

21012121314411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656427.

The product of its (nonzero) digits is 384, while the sum is 24.

Adding to 21012121314411 its reverse (11441312121012), we get a palindrome (32453433435423).

The spelling of 21012121314411 in words is "twenty-one trillion, twelve billion, one hundred twenty-one million, three hundred fourteen thousand, four hundred eleven".