20103231223020 has 96 divisors (see below), whose sum is σ = 61606254479616. Its totient is φ = 4857635923200.

The previous prime is 20103231223007. The next prime is 20103231223027. The reversal of 20103231223020 is 2032213230102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20103231223027) 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, 49405591 + ... + 49810830.

It is an arithmetic number, because the mean of its divisors is an integer number (641731817496).

Almost surely, 2^{20103231223020} is an apocalyptic number.

20103231223020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20103231223020 is an abundant number, since it is smaller than the sum of its proper divisors (41503023256596).

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

20103231223020 is a wasteful number, since it uses less digits than its factorization.

20103231223020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99216751 (or 99216749 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20103231223020 its reverse (2032213230102), we get a palindrome (22135444453122).

The spelling of 20103231223020 in words is "twenty trillion, one hundred three billion, two hundred thirty-one million, two hundred twenty-three thousand, twenty".