20234121500 has 48 divisors (see below), whose sum is σ = 44219622720. Its totient is φ = 8088465600.

The previous prime is 20234121491. The next prime is 20234121503. The reversal of 20234121500 is 512143202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234121503) 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, 822377 + ... + 846623.

It is an arithmetic number, because the mean of its divisors is an integer number (921242140).

Almost surely, 2^20234121500 is an apocalyptic number.

20234121500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20234121500 is an abundant number, since it is smaller than the sum of its proper divisors (23985501220).

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

20234121500 is a wasteful number, since it uses less digits than its factorization.

20234121500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25935 (or 25923 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 20234121500 its reverse (512143202), we get a palindrome (20746264702).

The spelling of 20234121500 in words is "twenty billion, two hundred thirty-four million, one hundred twenty-one thousand, five hundred".