200121323232 has 48 divisors (see below), whose sum is σ = 525465021312. Its totient is φ = 66688498560.

The previous prime is 200121323209. The next prime is 200121323239. The reversal of 200121323232 is 232323121002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 200121323199 and 200121323208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121323239) 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, 57307 + ... + 635237.

It is an arithmetic number, because the mean of its divisors is an integer number (10947187944).

Almost surely, 2^200121323232 is an apocalyptic number.

It is an amenable number.

200121323232 is an abundant number, since it is smaller than the sum of its proper divisors (325343698080).

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

200121323232 is a wasteful number, since it uses less digits than its factorization.

200121323232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581551 (or 581543 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 200121323232 its reverse (232323121002), we get a palindrome (432444444234).

The spelling of 200121323232 in words is "two hundred billion, one hundred twenty-one million, three hundred twenty-three thousand, two hundred thirty-two".