122130312 has 64 divisors (see below), whose sum is σ = 325969920. Its totient is φ = 37997568.

The previous prime is 122130289. The next prime is 122130343. The reversal of 122130312 is 213031221.

122130312 is nontrivially palindromic in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 122130291 and 122130300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50638 + ... + 52994.

It is an arithmetic number, because the mean of its divisors is an integer number (5093280).

Almost surely, 2^122130312 is an apocalyptic number.

122130312 is a gapful number since it is divisible by the number (12) 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 122130312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162984960).

122130312 is an abundant number, since it is smaller than the sum of its proper divisors (203839608).

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

122130312 is a wasteful number, since it uses less digits than its factorization.

122130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510 (or 2506 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 122130312 is about 11051.2583898848. The cubic root of 122130312 is about 496.1440896844.

Adding to 122130312 its reverse (213031221), we get a palindrome (335161533).

Subtracting 122130312 from its reverse (213031221), we obtain a palindrome (90900909).

The spelling of 122130312 in words is "one hundred twenty-two million, one hundred thirty thousand, three hundred twelve".