10203012020 has 48 divisors (see below), whose sum is σ = 22143733248. Its totient is φ = 3944868480.

The previous prime is 10203012019. The next prime is 10203012023. The reversal of 10203012020 is 2021030201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10203011992 and 10203012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203012023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538142 + ... + 556778.

It is an arithmetic number, because the mean of its divisors is an integer number (461327776).

Almost surely, 2^10203012020 is an apocalyptic number.

10203012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10203012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11071866624).

10203012020 is an abundant number, since it is smaller than the sum of its proper divisors (11940721228).

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

10203012020 is a wasteful number, since it uses less digits than its factorization.

10203012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19560 (or 19558 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 10203012020 its reverse (2021030201), we get a palindrome (12224042221).

The spelling of 10203012020 in words is "ten billion, two hundred three million, twelve thousand, twenty".