12221203402 has 8 divisors (see below), whose sum is σ = 18401508576. Its totient is φ = 6087367212.

The previous prime is 12221203391. The next prime is 12221203411. The reversal of 12221203402 is 20430212221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12221203402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11616588 + ... + 11617639.

It is an arithmetic number, because the mean of its divisors is an integer number (2300188572).

Almost surely, 2^12221203402 is an apocalyptic number.

12221203402 is a deficient number, since it is larger than the sum of its proper divisors (6180305174).

12221203402 is a wasteful number, since it uses less digits than its factorization.

12221203402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23234492.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12221203402 its reverse (20430212221), we get a palindrome (32651415623).

It can be divided in two parts, 12221 and 203402, that multiplied together give a palindrome (2485775842).

The spelling of 12221203402 in words is "twelve billion, two hundred twenty-one million, two hundred three thousand, four hundred two".