20113121200320 has 168 divisors, whose sum is σ = 69369263530944. Its totient is φ = 5348884267008.

The previous prime is 20113121200307. The next prime is 20113121200339. The reversal of 20113121200320 is 2300212131102.

20113121200320 is a `hidden beast` number, since 2 + 0 + 1 + 131 + 212 + 0 + 0 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20113121200293 and 20113121200302.

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, 8457649 + ... + 10571568.

Almost surely, 2^{20113121200320} is an apocalyptic number.

20113121200320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113121200320 is an abundant number, since it is smaller than the sum of its proper divisors (49256142330624).

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

20113121200320 is a wasteful number, since it uses less digits than its factorization.

20113121200320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19029607 (or 19029594 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20113121200320 its reverse (2300212131102), we get a palindrome (22413333331422).

The spelling of 20113121200320 in words is "twenty trillion, one hundred thirteen billion, one hundred twenty-one million, two hundred thousand, three hundred twenty".