201551122024 has 64 divisors (see below), whose sum is σ = 436154077440. Its totient is φ = 85528826880.

The previous prime is 201551122009. The next prime is 201551122037. The reversal of 201551122024 is 420221155102.

201551122024 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 201551122024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6508722 + ... + 6539614.

It is an arithmetic number, because the mean of its divisors is an integer number (6814907460).

Almost surely, 2^201551122024 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 201551122024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218077038720).

201551122024 is an abundant number, since it is smaller than the sum of its proper divisors (234602955416).

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

201551122024 is a wasteful number, since it uses less digits than its factorization.

201551122024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32050 (or 32046 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 201551122024 its reverse (420221155102), we get a palindrome (621772277126).

The spelling of 201551122024 in words is "two hundred one billion, five hundred fifty-one million, one hundred twenty-two thousand, twenty-four".