12221100342204 has 96 divisors (see below), whose sum is σ = 30875358044160. Its totient is φ = 3740051916288.

The previous prime is 12221100342203. The next prime is 12221100342211. The reversal of 12221100342204 is 40224300112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221100342203) 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, 38002317 + ... + 38322555.

It is an arithmetic number, because the mean of its divisors is an integer number (321618312960).

Almost surely, 2^{12221100342204} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12221100342204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15437679022080).

12221100342204 is an abundant number, since it is smaller than the sum of its proper divisors (18654257701956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12221100342204 is a wasteful number, since it uses less digits than its factorization.

12221100342204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321579 (or 321577 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 12221100342204 its reverse (40224300112221), we get a palindrome (52445400454425).

The spelling of 12221100342204 in words is "twelve trillion, two hundred twenty-one billion, one hundred million, three hundred forty-two thousand, two hundred four".