122222320 has 40 divisors (see below), whose sum is σ = 310002480. Its totient is φ = 44444160.

The previous prime is 122222291. The next prime is 122222339. The reversal of 122222320 is 23222221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 122222294 and 122222303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68565 + ... + 70324.

It is an arithmetic number, because the mean of its divisors is an integer number (7750062).

Almost surely, 2^122222320 is an apocalyptic number.

122222320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122222320 is an abundant number, since it is smaller than the sum of its proper divisors (187780160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122222320 is a wasteful number, since it uses less digits than its factorization.

122222320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138913 (or 138907 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 122222320 is about 11055.4203900168. The cubic root of 122222320 is about 496.2686499895.

Adding to 122222320 its reverse (23222221), we get a palindrome (145444541).

Subtracting from 122222320 its reverse (23222221), we obtain a palindrome (99000099).

The spelling of 122222320 in words is "one hundred twenty-two million, two hundred twenty-two thousand, three hundred twenty".