123211330320 has 320 divisors, whose sum is σ = 418135737600. Its totient is φ = 29831798784.

The previous prime is 123211330267. The next prime is 123211330337. The reversal of 123211330320 is 23033112321.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49740922 + ... + 49743398.

It is an arithmetic number, because the mean of its divisors is an integer number (1306674180).

Almost surely, 2^123211330320 is an apocalyptic number.

123211330320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123211330320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209067868800).

123211330320 is an abundant number, since it is smaller than the sum of its proper divisors (294924407280).

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

123211330320 is a wasteful number, since it uses less digits than its factorization.

123211330320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762 (or 2756 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123211330320 its reverse (23033112321), we get a palindrome (146244442641).

The spelling of 123211330320 in words is "one hundred twenty-three billion, two hundred eleven million, three hundred thirty thousand, three hundred twenty".