20135020203 has 32 divisors (see below), whose sum is σ = 31137569280. Its totient is φ = 12835199520.

The previous prime is 20135020193. The next prime is 20135020219. The reversal of 20135020203 is 30202053102.

It is not a de Polignac number, because 20135020203 - 2⁴ = 20135020187 is a prime.

It is a super-2 number, since 2×20135020203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20135020403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3264000 + ... + 3270162.

It is an arithmetic number, because the mean of its divisors is an integer number (973049040).

Almost surely, 2^20135020203 is an apocalyptic number.

20135020203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20135020203 is a deficient number, since it is larger than the sum of its proper divisors (11002549077).

20135020203 is a wasteful number, since it uses less digits than its factorization.

20135020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11456 (or 11450 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 20135020203 its reverse (30202053102), we get a palindrome (50337073305).

The spelling of 20135020203 in words is "twenty billion, one hundred thirty-five million, twenty thousand, two hundred three".