201521452200 has 96 divisors (see below), whose sum is σ = 639244874400. Its totient is φ = 52489301760.

The previous prime is 201521452189. The next prime is 201521452201. The reversal of 201521452200 is 2254125102.

It is a super-2 number, since 2×201521452200² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (201521452201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3879655 + ... + 3931254.

It is an arithmetic number, because the mean of its divisors is an integer number (6658800775).

Almost surely, 2^201521452200 is an apocalyptic number.

201521452200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201521452200 is an abundant number, since it is smaller than the sum of its proper divisors (437723422200).

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

201521452200 is a wasteful number, since it uses less digits than its factorization.

201521452200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7810971 (or 7810962 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 201521452200 its reverse (2254125102), we get a palindrome (203775577302).

The spelling of 201521452200 in words is "two hundred one billion, five hundred twenty-one million, four hundred fifty-two thousand, two hundred".