12121243030 has 16 divisors (see below), whose sum is σ = 23496563664. Its totient is φ = 4475535840.

The previous prime is 12121242997. The next prime is 12121243051. The reversal of 12121243030 is 3034212121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12121242989 and 12121243007.

It is a congruent number.

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, 46620036 + ... + 46620295.

It is an arithmetic number, because the mean of its divisors is an integer number (1468535229).

Almost surely, 2^12121243030 is an apocalyptic number.

12121243030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121243030 is a deficient number, since it is larger than the sum of its proper divisors (11375320634).

12121243030 is a wasteful number, since it uses less digits than its factorization.

12121243030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93240351.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12121243030 its reverse (3034212121), we get a palindrome (15155455151).

The spelling of 12121243030 in words is "twelve billion, one hundred twenty-one million, two hundred forty-three thousand, thirty".