123120120122 has 4 divisors (see below), whose sum is σ = 184680180186. Its totient is φ = 61560060060.

The previous prime is 123120120089. The next prime is 123120120139. The reversal of 123120120122 is 221021021321.

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

It can be written as a sum of positive squares in only one way, i.e., 63851730721 + 59268389401 = 252689^2 + 243451^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123120120122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30780030029 + ... + 30780030032.

Almost surely, 2^123120120122 is an apocalyptic number.

123120120122 is a deficient number, since it is larger than the sum of its proper divisors (61560060064).

123120120122 is an equidigital number, since it uses as much as digits as its factorization.

123120120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61560060063.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 123120120122 its reverse (221021021321), we get a palindrome (344141141443).

The spelling of 123120120122 in words is "one hundred twenty-three billion, one hundred twenty million, one hundred twenty thousand, one hundred twenty-two".