12121132230 has 48 divisors (see below), whose sum is σ = 31674964464. Its totient is φ = 3215889600.

The previous prime is 12121132217. The next prime is 12121132279. The reversal of 12121132230 is 3223112121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324096 + ... + 359555.

It is an arithmetic number, because the mean of its divisors is an integer number (659895093).

Almost surely, 2^12121132230 is an apocalyptic number.

12121132230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121132230 is an abundant number, since it is smaller than the sum of its proper divisors (19553832234).

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

12121132230 is a wasteful number, since it uses less digits than its factorization.

12121132230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683861 (or 683858 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12121132230 its reverse (3223112121), we get a palindrome (15344244351).

The spelling of 12121132230 in words is "twelve billion, one hundred twenty-one million, one hundred thirty-two thousand, two hundred thirty".