123209911422 has 96 divisors (see below), whose sum is σ = 295475587680. Its totient is φ = 36859173120.

The previous prime is 123209911421. The next prime is 123209911427. The reversal of 123209911422 is 224119902321.

123209911422 is a `hidden beast` number, since 1 + 23 + 209 + 9 + 1 + 1 + 422 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123209911421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14030229 + ... + 14039007.

It is an arithmetic number, because the mean of its divisors is an integer number (3077870705).

Almost surely, 2^123209911422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123209911422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147737793840).

123209911422 is an abundant number, since it is smaller than the sum of its proper divisors (172265676258).

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

123209911422 is a wasteful number, since it uses less digits than its factorization.

123209911422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10458 (or 10455 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 123209911422 in words is "one hundred twenty-three billion, two hundred nine million, nine hundred eleven thousand, four hundred twenty-two".