20303122123312 has 120 divisors (see below), whose sum is σ = 47752256160000. Its totient is φ = 8322498188928.

The previous prime is 20303122123279. The next prime is 20303122123343. The reversal of 20303122123312 is 21332122130302.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 441742989 + ... + 441788947.

It is an arithmetic number, because the mean of its divisors is an integer number (397935468000).

Almost surely, 2^{20303122123312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20303122123312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23876128080000).

20303122123312 is an abundant number, since it is smaller than the sum of its proper divisors (27449134036688).

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

20303122123312 is a wasteful number, since it uses less digits than its factorization.

20303122123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70503 (or 70490 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20303122123312 its reverse (21332122130302), we get a palindrome (41635244253614).

The spelling of 20303122123312 in words is "twenty trillion, three hundred three billion, one hundred twenty-two million, one hundred twenty-three thousand, three hundred twelve".