123222210 has 64 divisors (see below), whose sum is σ = 313611264. Its totient is φ = 30931200.

The previous prime is 123222199. The next prime is 123222217. The reversal of 123222210 is 12222321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123222210.

It is not an unprimeable number, because it can be changed into a prime (123222217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32620 + ... + 36200.

It is an arithmetic number, because the mean of its divisors is an integer number (4900176).

Almost surely, 2^123222210 is an apocalyptic number.

123222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123222210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156805632).

123222210 is an abundant number, since it is smaller than the sum of its proper divisors (190389054).

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

123222210 is a wasteful number, since it uses less digits than its factorization.

123222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 123222210 is about 11100.5499863745. The cubic root of 123222210 is about 497.6182862262.

Adding to 123222210 its reverse (12222321), we get a palindrome (135444531).

The spelling of 123222210 in words is "one hundred twenty-three million, two hundred twenty-two thousand, two hundred ten".