123122121222 has 16 divisors (see below), whose sum is σ = 248423396400. Its totient is φ = 40677514752.

The previous prime is 123122121209. The next prime is 123122121259. The reversal of 123122121222 is 222121221321.

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

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, 90797347 + ... + 90798702.

It is an arithmetic number, because the mean of its divisors is an integer number (15526462275).

Almost surely, 2^123122121222 is an apocalyptic number.

123122121222 is an abundant number, since it is smaller than the sum of its proper divisors (125301275178).

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

123122121222 is a wasteful number, since it uses less digits than its factorization.

123122121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181596167.

The product of its digits is 384, while the sum is 21.

Adding to 123122121222 its reverse (222121221321), we get a palindrome (345243342543).

The spelling of 123122121222 in words is "one hundred twenty-three billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".