12211322022 has 48 divisors (see below), whose sum is σ = 27535736592. Its totient is φ = 4055909760.

The previous prime is 12211322017. The next prime is 12211322029. The reversal of 12211322022 is 22022311221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12211321986 and 12211322004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211322029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91858 + ... + 181274.

It is an arithmetic number, because the mean of its divisors is an integer number (573661179).

Almost surely, 2^12211322022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211322022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13767868296).

12211322022 is an abundant number, since it is smaller than the sum of its proper divisors (15324414570).

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

12211322022 is an equidigital number, since it uses as much as digits as its factorization.

12211322022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89715 (or 89703 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12211322022 its reverse (22022311221), we get a palindrome (34233633243).

The spelling of 12211322022 in words is "twelve billion, two hundred eleven million, three hundred twenty-two thousand, twenty-two".