201142321252 has 24 divisors (see below), whose sum is σ = 353441644416. Its totient is φ = 100159464288.

The previous prime is 201142321241. The next prime is 201142321309. The reversal of 201142321252 is 252123241102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1680213 + ... + 1795939.

It is an arithmetic number, because the mean of its divisors is an integer number (14726735184).

Almost surely, 2^201142321252 is an apocalyptic number.

It is an amenable number.

201142321252 is a deficient number, since it is larger than the sum of its proper divisors (152299323164).

201142321252 is a wasteful number, since it uses less digits than its factorization.

201142321252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117507 (or 117505 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 201142321252 its reverse (252123241102), we get a palindrome (453265562354).

The spelling of 201142321252 in words is "two hundred one billion, one hundred forty-two million, three hundred twenty-one thousand, two hundred fifty-two".