20321020300123 has 32 divisors (see below), whose sum is σ = 21684431462400. Its totient is φ = 18987798394656.

The previous prime is 20321020300099. The next prime is 20321020300201. The reversal of 20321020300123 is 32100302012302.

It is a cyclic number.

It is not a de Polignac number, because 20321020300123 - 2¹³ = 20321020291931 is a prime.

It is a super-2 number, since 2×20321020300123² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20321020300123.

It is not an unprimeable number, because it can be changed into a prime (20321020300723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4111067790 + ... + 4111072732.

It is an arithmetic number, because the mean of its divisors is an integer number (677638483200).

Almost surely, 2^{20321020300123} is an apocalyptic number.

20321020300123 is a deficient number, since it is larger than the sum of its proper divisors (1363411162277).

20321020300123 is a wasteful number, since it uses less digits than its factorization.

20321020300123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8871.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20321020300123 its reverse (32100302012302), we get a palindrome (52421322312425).

The spelling of 20321020300123 in words is "twenty trillion, three hundred twenty-one billion, twenty million, three hundred thousand, one hundred twenty-three".