56121221110 has 16 divisors (see below), whose sum is σ = 101637944496. Its totient is φ = 22310767008.

The previous prime is 56121221077. The next prime is 56121221119. The reversal of 56121221110 is 1112212165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56121221119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17213469 + ... + 17216728.

It is an arithmetic number, because the mean of its divisors is an integer number (6352371531).

Almost surely, 2^56121221110 is an apocalyptic number.

56121221110 is a deficient number, since it is larger than the sum of its proper divisors (45516723386).

56121221110 is a wasteful number, since it uses less digits than its factorization.

56121221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34430367.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 56121221110 its reverse (1112212165), we get a palindrome (57233433275).

The spelling of 56121221110 in words is "fifty-six billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred ten".