123402202112 has 88 divisors (see below), whose sum is σ = 287678829600. Its totient is φ = 52886507520.

The previous prime is 123402202109. The next prime is 123402202129. The reversal of 123402202112 is 211202204321.

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, 175562 + ... + 526902.

Almost surely, 2^123402202112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123402202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143839414800).

123402202112 is an abundant number, since it is smaller than the sum of its proper divisors (164276627488).

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

123402202112 is an frugal number, since it uses more digits than its factorization.

123402202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351382 (or 351350 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 123402202112 its reverse (211202204321), we get a palindrome (334604406433).

The spelling of 123402202112 in words is "one hundred twenty-three billion, four hundred two million, two hundred two thousand, one hundred twelve".