201321210552 has 64 divisors (see below), whose sum is σ = 627494688000. Its totient is φ = 52291223040.

The previous prime is 201321210527. The next prime is 201321210557. The reversal of 201321210552 is 255012123102.

201321210552 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201321210552² (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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201321210557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54468177 + ... + 54471872.

It is an arithmetic number, because the mean of its divisors is an integer number (9804604500).

Almost surely, 2^201321210552 is an apocalyptic number.

201321210552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201321210552 is an abundant number, since it is smaller than the sum of its proper divisors (426173477448).

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

201321210552 is a wasteful number, since it uses less digits than its factorization.

201321210552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108940076 (or 108940072 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 201321210552 its reverse (255012123102), we get a palindrome (456333333654).

The spelling of 201321210552 in words is "two hundred one billion, three hundred twenty-one million, two hundred ten thousand, five hundred fifty-two".