122122222 has 4 divisors (see below), whose sum is σ = 183183336. Its totient is φ = 61061110.

The previous prime is 122122181. The next prime is 122122241. The reversal of 122122222 is 222221221.

It is a semiprime because it is the product of two primes.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 122122196 and 122122205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30530554 + ... + 30530557.

It is an arithmetic number, because the mean of its divisors is an integer number (45795834).

Almost surely, 2^122122222 is an apocalyptic number.

122122222 is a deficient number, since it is larger than the sum of its proper divisors (61061114).

122122222 is an equidigital number, since it uses as much as digits as its factorization.

122122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61061113.

The product of its digits is 128, while the sum is 16.

The square root of 122122222 is about 11050.8923621579. The cubic root of 122122222 is about 496.1331344617.

Adding to 122122222 its reverse (222221221), we get a palindrome (344343443).

The spelling of 122122222 in words is "one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".