201220145352 has 64 divisors (see below), whose sum is σ = 571943592000. Its totient is φ = 65513532672.

The previous prime is 201220145351. The next prime is 201220145353. The reversal of 201220145352 is 253541022102.

201220145352 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 201 + 453 + 5 + 2 = 666.

201220145352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201220145351) and next prime (201220145353).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (201220145351) by changing a digit.

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, 10822977 + ... + 10841552.

It is an arithmetic number, because the mean of its divisors is an integer number (8936618625).

Almost surely, 2^201220145352 is an apocalyptic number.

It is an amenable number.

201220145352 is an abundant number, since it is smaller than the sum of its proper divisors (370723446648).

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

201220145352 is a wasteful number, since it uses less digits than its factorization.

201220145352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21664587 (or 21664577 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 201220145352 its reverse (253541022102), we get a palindrome (454761167454).

The spelling of 201220145352 in words is "two hundred one billion, two hundred twenty million, one hundred forty-five thousand, three hundred fifty-two".