12122221022 has 8 divisors (see below), whose sum is σ = 18190027200. Its totient is φ = 6058878624.

The previous prime is 12122220973. The next prime is 12122221037. The reversal of 12122221022 is 22012222121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109147 + ... + 1120022.

It is an arithmetic number, because the mean of its divisors is an integer number (2273753400).

Almost surely, 2^12122221022 is an apocalyptic number.

12122221022 is a deficient number, since it is larger than the sum of its proper divisors (6067806178).

12122221022 is a wasteful number, since it uses less digits than its factorization.

12122221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231890.

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

Adding to 12122221022 its reverse (22012222121), we get a palindrome (34134443143).

The spelling of 12122221022 in words is "twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty-two".