200320121424 has 40 divisors (see below), whose sum is σ = 520094142400. Its totient is φ = 66437826048.

The previous prime is 200320121423. The next prime is 200320121429. The reversal of 200320121424 is 424121023002.

It is a super-2 number, since 2×200320121424² (a number of 23 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 200320121424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200320121423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10476217 + ... + 10495320.

It is an arithmetic number, because the mean of its divisors is an integer number (13002353560).

Almost surely, 2^200320121424 is an apocalyptic number.

200320121424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

200320121424 is an abundant number, since it is smaller than the sum of its proper divisors (319774020976).

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

200320121424 is a wasteful number, since it uses less digits than its factorization.

200320121424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20971747 (or 20971741 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 200320121424 its reverse (424121023002), we get a palindrome (624441144426).

The spelling of 200320121424 in words is "two hundred billion, three hundred twenty million, one hundred twenty-one thousand, four hundred twenty-four".