20203021240203 has 32 divisors (see below), whose sum is σ = 27990205931520. Its totient is φ = 12952467130400.

The previous prime is 20203021240147. The next prime is 20203021240211. The reversal of 20203021240203 is 30204212030202.

It is a cyclic number.

It is not a de Polignac number, because 20203021240203 - 2⁹ = 20203021239691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20203021240203.

It is not an unprimeable number, because it can be changed into a prime (20203021240253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16779928 + ... + 17943578.

It is an arithmetic number, because the mean of its divisors is an integer number (874693935360).

Almost surely, 2^{20203021240203} is an apocalyptic number.

20203021240203 is a deficient number, since it is larger than the sum of its proper divisors (7787184691317).

20203021240203 is a wasteful number, since it uses less digits than its factorization.

20203021240203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165847.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20203021240203 its reverse (30204212030202), we get a palindrome (50407233270405).

The spelling of 20203021240203 in words is "twenty trillion, two hundred three billion, twenty-one million, two hundred forty thousand, two hundred three".