21034020011012 has 96 divisors (see below), whose sum is σ = 37863581995008. Its totient is φ = 10221382080000.

The previous prime is 21034020010981. The next prime is 21034020011033. The reversal of 21034020011012 is 21011002043012.

It is an unprimeable number.

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, 3864413963 + ... + 3864419405.

It is an arithmetic number, because the mean of its divisors is an integer number (394412312448).

Almost surely, 2^{21034020011012} is an apocalyptic number.

It is an amenable number.

21034020011012 is a deficient number, since it is larger than the sum of its proper divisors (16829561983996).

21034020011012 is a wasteful number, since it uses less digits than its factorization.

21034020011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321 (or 6319 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21034020011012 its reverse (21011002043012), we get a palindrome (42045022054024).

The spelling of 21034020011012 in words is "twenty-one trillion, thirty-four billion, twenty million, eleven thousand, twelve".