122122212221 has 8 divisors (see below), whose sum is σ = 124967978784. Its totient is φ = 119276705520.

The previous prime is 122122212203. The next prime is 122122212319. The reversal of 122122212221 is 122212221221.

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

It is a cyclic number.

It is not a de Polignac number, because 122122212221 - 2¹⁸ = 122121950077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122122212193 and 122122212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122122212721) 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, 1145531 + ... + 1247591.

It is an arithmetic number, because the mean of its divisors is an integer number (15620997348).

Almost surely, 2^122122212221 is an apocalyptic number.

It is an amenable number.

122122212221 is a deficient number, since it is larger than the sum of its proper divisors (2845766563).

122122212221 is a wasteful number, since it uses less digits than its factorization.

122122212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129931.

The product of its digits is 256, while the sum is 20.

Adding to 122122212221 its reverse (122212221221), we get a palindrome (244334433442).

The spelling of 122122212221 in words is "one hundred twenty-two billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-one".