20023121300 has 144 divisors (see below), whose sum is σ = 53750726400. Its totient is φ = 6304573440.

The previous prime is 20023121297. The next prime is 20023121381. The reversal of 20023121300 is 312132002.

It is a happy number.

It is a super-3 number, since 3×20023121300³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1805372 + ... + 1816428.

Almost surely, 2^20023121300 is an apocalyptic number.

20023121300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20023121300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26875363200).

20023121300 is an abundant number, since it is smaller than the sum of its proper divisors (33727605100).

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

20023121300 is a wasteful number, since it uses less digits than its factorization.

20023121300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11290 (or 11283 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20023121300 its reverse (312132002), we get a palindrome (20335253302).

The spelling of 20023121300 in words is "twenty billion, twenty-three million, one hundred twenty-one thousand, three hundred".