203013120020 has 12 divisors (see below), whose sum is σ = 426327552084. Its totient is φ = 81205248000.

The previous prime is 203013120017. The next prime is 203013120113. The reversal of 203013120020 is 20021310302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62331114244 + 140682005776 = 249662^2 + 375076^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203013119977 and 203013120004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5075327981 + ... + 5075328020.

It is an arithmetic number, because the mean of its divisors is an integer number (35527296007).

Almost surely, 2^203013120020 is an apocalyptic number.

203013120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203013120020 is an abundant number, since it is smaller than the sum of its proper divisors (223314432064).

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

203013120020 is a wasteful number, since it uses less digits than its factorization.

203013120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10150656010 (or 10150656008 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 203013120020 its reverse (20021310302), we get a palindrome (223034430322).

The spelling of 203013120020 in words is "two hundred three billion, thirteen million, one hundred twenty thousand, twenty".