12102201321 has 32 divisors (see below), whose sum is σ = 19057287168. Its totient is φ = 6685096320.

The previous prime is 12102201311. The next prime is 12102201359. The reversal of 12102201321 is 12310220121.

It is not a de Polignac number, because 12102201321 - 2⁵ = 12102201289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12102201321.

It is not an unprimeable number, because it can be changed into a prime (12102201311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610650 + ... + 630156.

It is an arithmetic number, because the mean of its divisors is an integer number (595540224).

Almost surely, 2^12102201321 is an apocalyptic number.

It is an amenable number.

12102201321 is a deficient number, since it is larger than the sum of its proper divisors (6955085847).

12102201321 is a wasteful number, since it uses less digits than its factorization.

12102201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20501.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12102201321 its reverse (12310220121), we get a palindrome (24412421442).

The spelling of 12102201321 in words is "twelve billion, one hundred two million, two hundred one thousand, three hundred twenty-one".