12001522 has 16 divisors (see below), whose sum is σ = 19635840. Its totient is φ = 5468112.

The previous prime is 12001511. The next prime is 12001523. The reversal of 12001522 is 22510021.

12001522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (12001523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868 + ... + 4975.

It is an arithmetic number, because the mean of its divisors is an integer number (1227240).

Almost surely, 2^12001522 is an apocalyptic number.

12001522 is a deficient number, since it is larger than the sum of its proper divisors (7634318).

12001522 is a wasteful number, since it uses less digits than its factorization.

12001522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 12001522 is about 3464.3212899499. The cubic root of 12001522 is about 228.9525272964.

Adding to 12001522 its reverse (22510021), we get a palindrome (34511543).

The spelling of 12001522 in words is "twelve million, one thousand, five hundred twenty-two".