20203121224 has 192 divisors, whose sum is σ = 45973699200. Its totient is φ = 8317520640.

The previous prime is 20203121209. The next prime is 20203121233. The reversal of 20203121224 is 42212130202.

It is a super-2 number, since 2×20203121224² (a number of 21 digits) contains 22 as substring.

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, 185349682 + ... + 185349790.

It is an arithmetic number, because the mean of its divisors is an integer number (239446350).

Almost surely, 2^20203121224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20203121224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22986849600).

20203121224 is an abundant number, since it is smaller than the sum of its proper divisors (25770577976).

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

20203121224 is a wasteful number, since it uses less digits than its factorization.

20203121224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20203121224 its reverse (42212130202), we get a palindrome (62415251426).

The spelling of 20203121224 in words is "twenty billion, two hundred three million, one hundred twenty-one thousand, two hundred twenty-four".