12021210222 has 64 divisors (see below), whose sum is σ = 29034823680. Its totient is φ = 3243693024.

The previous prime is 12021210203. The next prime is 12021210251. The reversal of 12021210222 is 22201212021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2448 + ... + 155075.

It is an arithmetic number, because the mean of its divisors is an integer number (453669120).

Almost surely, 2^12021210222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021210222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14517411840).

12021210222 is an abundant number, since it is smaller than the sum of its proper divisors (17013613458).

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

12021210222 is a wasteful number, since it uses less digits than its factorization.

12021210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157637.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12021210222 its reverse (22201212021), we get a palindrome (34222422243).

The spelling of 12021210222 in words is "twelve billion, twenty-one million, two hundred ten thousand, two hundred twenty-two".