20116755475221 has 16 divisors (see below), whose sum is σ = 28234324339200. Its totient is φ = 12705192542448.

The previous prime is 20116755475211. The next prime is 20116755475253. The reversal of 20116755475221 is 12257455761102.

It is not a de Polignac number, because 20116755475221 - 2¹¹ = 20116755473173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20116755475211) 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 15 ways as a sum of consecutive naturals, for example, 4180360 + ... + 7596638.

It is an arithmetic number, because the mean of its divisors is an integer number (1764645271200).

Almost surely, 2^{20116755475221} is an apocalyptic number.

It is an amenable number.

20116755475221 is a deficient number, since it is larger than the sum of its proper divisors (8117568863979).

20116755475221 is a wasteful number, since it uses less digits than its factorization.

20116755475221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519608.

The product of its (nonzero) digits is 1176000, while the sum is 48.

The spelling of 20116755475221 in words is "twenty trillion, one hundred sixteen billion, seven hundred fifty-five million, four hundred seventy-five thousand, two hundred twenty-one".