20303103101220 has 36 divisors (see below), whose sum is σ = 61586079407580. Its totient is φ = 5414160826944.

The previous prime is 20303103101167. The next prime is 20303103101221. The reversal of 20303103101220 is 2210130130302.

20303103101220 is a `hidden beast` number, since 2 + 0 + 30 + 310 + 3 + 101 + 220 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11238330979044 + 9064772122176 = 3352362^2 + 3010776^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 20303103101193 and 20303103101202.

It is not an unprimeable number, because it can be changed into a prime (20303103101221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56397508435 + ... + 56397508794.

Almost surely, 2^{20303103101220} is an apocalyptic number.

20303103101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303103101220 is an abundant number, since it is smaller than the sum of its proper divisors (41282976306360).

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

20303103101220 is a wasteful number, since it uses less digits than its factorization.

20303103101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112795017244 (or 112795017239 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20303103101220 its reverse (2210130130302), we get a palindrome (22513233231522).

The spelling of 20303103101220 in words is "twenty trillion, three hundred three billion, one hundred three million, one hundred one thousand, two hundred twenty".