20123203310020 has 48 divisors (see below), whose sum is σ = 42891442957440. Its totient is φ = 7928775131904.

The previous prime is 20123203309999. The next prime is 20123203310029. The reversal of 20123203310020 is 2001330232102.

It is a super-2 number, since 2×20123203310020² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20123203310020.

It is not an unprimeable number, because it can be changed into a prime (20123203310029) 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, 29516832 + ... + 30190888.

It is an arithmetic number, because the mean of its divisors is an integer number (893571728280).

Almost surely, 2^{20123203310020} is an apocalyptic number.

20123203310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123203310020 is an abundant number, since it is smaller than the sum of its proper divisors (22768239647420).

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

20123203310020 is a wasteful number, since it uses less digits than its factorization.

20123203310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696412 (or 696410 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20123203310020 its reverse (2001330232102), we get a palindrome (22124533542122).

The spelling of 20123203310020 in words is "twenty trillion, one hundred twenty-three billion, two hundred three million, three hundred ten thousand, twenty".