20534250220120 has 128 divisors (see below), whose sum is σ = 57427089229440. Its totient is φ = 6434407526400.

The previous prime is 20534250220093. The next prime is 20534250220151. The reversal of 20534250220120 is 2102205243502.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27559477 + ... + 28294756.

It is an arithmetic number, because the mean of its divisors is an integer number (448649134605).

Almost surely, 2^{20534250220120} is an apocalyptic number.

20534250220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20534250220120 is an abundant number, since it is smaller than the sum of its proper divisors (36892839009320).

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

20534250220120 is a wasteful number, since it uses less digits than its factorization.

20534250220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55854365 (or 55854361 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20534250220120 its reverse (2102205243502), we get a palindrome (22636455463622).

The spelling of 20534250220120 in words is "twenty trillion, five hundred thirty-four billion, two hundred fifty million, two hundred twenty thousand, one hundred twenty".