201243102252 has 48 divisors (see below), whose sum is σ = 470542679040. Its totient is φ = 66941785152.

The previous prime is 201243102211. The next prime is 201243102253. The reversal of 201243102252 is 252201342102.

It is not an unprimeable number, because it can be changed into a prime (201243102253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23209774 + ... + 23218442.

It is an arithmetic number, because the mean of its divisors is an integer number (9802972480).

Almost surely, 2^201243102252 is an apocalyptic number.

It is an amenable number.

201243102252 is an abundant number, since it is smaller than the sum of its proper divisors (269299576788).

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

201243102252 is a wasteful number, since it uses less digits than its factorization.

201243102252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12470 (or 12468 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 201243102252 its reverse (252201342102), we get a palindrome (453444444354).

The spelling of 201243102252 in words is "two hundred one billion, two hundred forty-three million, one hundred two thousand, two hundred fifty-two".