12211021222 has 16 divisors (see below), whose sum is σ = 19396219392. Its totient is φ = 5745697920.

The previous prime is 12211021219. The next prime is 12211021247. The reversal of 12211021222 is 22212011221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12211021196 and 12211021205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401947 + ... + 431257.

It is an arithmetic number, because the mean of its divisors is an integer number (1212263712).

Almost surely, 2^12211021222 is an apocalyptic number.

12211021222 is a deficient number, since it is larger than the sum of its proper divisors (7185198170).

12211021222 is a wasteful number, since it uses less digits than its factorization.

12211021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41583.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12211021222 its reverse (22212011221), we get a palindrome (34423032443).

The spelling of 12211021222 in words is "twelve billion, two hundred eleven million, twenty-one thousand, two hundred twenty-two".