10213120503 has 12 divisors (see below), whose sum is σ = 14842792120. Its totient is φ = 6766974576.

The previous prime is 10213120499. The next prime is 10213120571. The reversal of 10213120503 is 30502131201.

10213120503 is a `hidden beast` number, since 10 + 2 + 131 + 20 + 503 = 666.

10213120503 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10213120503 - 2² = 10213120499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10213120573) 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, 3479488 + ... + 3482421.

Almost surely, 2^10213120503 is an apocalyptic number.

10213120503 is a deficient number, since it is larger than the sum of its proper divisors (4629671617).

10213120503 is a wasteful number, since it uses less digits than its factorization.

10213120503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6962078 (or 6962075 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 10213120503 its reverse (30502131201), we get a palindrome (40715251704).

The spelling of 10213120503 in words is "ten billion, two hundred thirteen million, one hundred twenty thousand, five hundred three".