20103103200120 has 128 divisors (see below), whose sum is σ = 64453710355200. Its totient is φ = 4998330607616.

The previous prime is 20103103200091. The next prime is 20103103200139. The reversal of 20103103200120 is 2100230130102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20103103200120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45830610 + ... + 46267169.

It is an arithmetic number, because the mean of its divisors is an integer number (503544612150).

Almost surely, 2^{20103103200120} is an apocalyptic number.

20103103200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20103103200120 is an abundant number, since it is smaller than the sum of its proper divisors (44350607155080).

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

20103103200120 is a wasteful number, since it uses less digits than its factorization.

20103103200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92097917 (or 92097913 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20103103200120 its reverse (2100230130102), we get a palindrome (22203333330222).

The spelling of 20103103200120 in words is "twenty trillion, one hundred three billion, one hundred three million, two hundred thousand, one hundred twenty".