12122021222 has 16 divisors (see below), whose sum is σ = 18332490240. Its totient is φ = 6011224128.

The previous prime is 12122021221. The next prime is 12122021237. The reversal of 12122021222 is 22212022121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122021222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122021221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958154 + ... + 970722.

It is an arithmetic number, because the mean of its divisors is an integer number (1145780640).

Almost surely, 2^12122021222 is an apocalyptic number.

12122021222 is a deficient number, since it is larger than the sum of its proper divisors (6210469018).

12122021222 is a wasteful number, since it uses less digits than its factorization.

12122021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16495.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12122021222 its reverse (22212022121), we get a palindrome (34334043343).

The spelling of 12122021222 in words is "twelve billion, one hundred twenty-two million, twenty-one thousand, two hundred twenty-two".