12221210012 has 48 divisors (see below), whose sum is σ = 23578853760. Its totient is φ = 5496312000.

The previous prime is 12221210009. The next prime is 12221210047. The reversal of 12221210012 is 21001212221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6830414 + ... + 6832202.

It is an arithmetic number, because the mean of its divisors is an integer number (491226120).

Almost surely, 2^12221210012 is an apocalyptic number.

It is an amenable number.

12221210012 is a deficient number, since it is larger than the sum of its proper divisors (11357643748).

12221210012 is a wasteful number, since it uses less digits than its factorization.

12221210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362 (or 3360 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12221210012 its reverse (21001212221), we get a palindrome (33222422233).

It can be divided in two parts, 12221 and 210012, that multiplied together give a palindrome (2566556652).

The spelling of 12221210012 in words is "twelve billion, two hundred twenty-one million, two hundred ten thousand, twelve".