123220122 has 16 divisors (see below), whose sum is σ = 250480992. Its totient is φ = 40399920.

The previous prime is 123220117. The next prime is 123220127. The reversal of 123220122 is 221022321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123220117) and next prime (123220127).

It is not an unprimeable number, because it can be changed into a prime (123220127) 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, 167968 + ... + 168699.

It is an arithmetic number, because the mean of its divisors is an integer number (15655062).

Almost surely, 2^123220122 is an apocalyptic number.

123220122 is an abundant number, since it is smaller than the sum of its proper divisors (127260870).

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

123220122 is a wasteful number, since it uses less digits than its factorization.

123220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336733.

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

The square root of 123220122 is about 11100.4559365821. The cubic root of 123220122 is about 497.6154754969.

Adding to 123220122 its reverse (221022321), we get a palindrome (344242443).

The spelling of 123220122 in words is "one hundred twenty-three million, two hundred twenty thousand, one hundred twenty-two".