122020543566 has 48 divisors (see below), whose sum is σ = 270078951168. Its totient is φ = 39796909200.

The previous prime is 122020543559. The next prime is 122020543607. The reversal of 122020543566 is 665345020221.

122020543566 is a `hidden beast` number, since 1 + 2 + 20 + 20 + 54 + 3 + 566 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 122020543566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3307281 + ... + 3343971.

It is an arithmetic number, because the mean of its divisors is an integer number (5626644816).

Almost surely, 2^122020543566 is an apocalyptic number.

122020543566 is an abundant number, since it is smaller than the sum of its proper divisors (148058407602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122020543566 is a wasteful number, since it uses less digits than its factorization.

122020543566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40677 (or 40674 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 122020543566 its reverse (665345020221), we get a palindrome (787365563787).

The spelling of 122020543566 in words is "one hundred twenty-two billion, twenty million, five hundred forty-three thousand, five hundred sixty-six".