122122232221 has 16 divisors (see below), whose sum is σ = 133532800128. Its totient is φ = 110763400000.

The previous prime is 122122232213. The next prime is 122122232251. The reversal of 122122232221 is 122232221221.

It is a happy number.

It is not a de Polignac number, because 122122232221 - 2³ = 122122232213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122122232192 and 122122232201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122122232251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8874096 + ... + 8887846.

It is an arithmetic number, because the mean of its divisors is an integer number (8345800008).

Almost surely, 2^122122232221 is an apocalyptic number.

122122232221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122122232221 is a deficient number, since it is larger than the sum of its proper divisors (11410567907).

122122232221 is a wasteful number, since it uses less digits than its factorization.

122122232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15572.

The product of its digits is 768, while the sum is 22.

Adding to 122122232221 its reverse (122232221221), we get a palindrome (244354453442).

The spelling of 122122232221 in words is "one hundred twenty-two billion, one hundred twenty-two million, two hundred thirty-two thousand, two hundred twenty-one".