11203203311020 has 48 divisors (see below), whose sum is σ = 26986904598528. Its totient is φ = 3826924470720.

The previous prime is 11203203311017. The next prime is 11203203311021. The reversal of 11203203311020 is 2011330230211.

It is not an unprimeable number, because it can be changed into a prime (11203203311021) 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, 147605752 + ... + 147681631.

It is an arithmetic number, because the mean of its divisors is an integer number (562227179136).

Almost surely, 2^{11203203311020} is an apocalyptic number.

11203203311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11203203311020 is an abundant number, since it is smaller than the sum of its proper divisors (15783701287508).

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

11203203311020 is a wasteful number, since it uses less digits than its factorization.

11203203311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295287670 (or 295287668 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11203203311020 its reverse (2011330230211), we get a palindrome (13214533541231).

The spelling of 11203203311020 in words is "eleven trillion, two hundred three billion, two hundred three million, three hundred eleven thousand, twenty".