12221312302 has 8 divisors (see below), whose sum is σ = 18632492712. Its totient is φ = 6010481400.

The previous prime is 12221312263. The next prime is 12221312309. The reversal of 12221312302 is 20321312221.

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 12221312302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221312309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50087224 + ... + 50087467.

It is an arithmetic number, because the mean of its divisors is an integer number (2329061589).

Almost surely, 2^12221312302 is an apocalyptic number.

12221312302 is a deficient number, since it is larger than the sum of its proper divisors (6411180410).

12221312302 is a wasteful number, since it uses less digits than its factorization.

12221312302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100174754.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12221312302 its reverse (20321312221), we get a palindrome (32542624523).

The spelling of 12221312302 in words is "twelve billion, two hundred twenty-one million, three hundred twelve thousand, three hundred two".