21120440130212 has 48 divisors (see below), whose sum is σ = 37902484139520. Its totient is φ = 10292234464512.

The previous prime is 21120440130173. The next prime is 21120440130239. The reversal of 21120440130212 is 21203104402112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473349728 + ... + 473394344.

It is an arithmetic number, because the mean of its divisors is an integer number (789635086240).

Almost surely, 2^{21120440130212} is an apocalyptic number.

It is an amenable number.

21120440130212 is a deficient number, since it is larger than the sum of its proper divisors (16782044009308).

21120440130212 is a wasteful number, since it uses less digits than its factorization.

21120440130212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50580 (or 50578 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21120440130212 its reverse (21203104402112), we get a palindrome (42323544532324).

The spelling of 21120440130212 in words is "twenty-one trillion, one hundred twenty billion, four hundred forty million, one hundred thirty thousand, two hundred twelve".