12121001221230 has 96 divisors (see below), whose sum is σ = 34380203120640. Its totient is φ = 2938370178240.

The previous prime is 12121001221211. The next prime is 12121001221261. The reversal of 12121001221230 is 3212210012121.

12121001221230 is a `hidden beast` number, since 1 + 2 + 1 + 210 + 0 + 1 + 221 + 230 = 666.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88159119 + ... + 88296501.

It is an arithmetic number, because the mean of its divisors is an integer number (358127115840).

Almost surely, 2^{12121001221230} is an apocalyptic number.

12121001221230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121001221230 is an abundant number, since it is smaller than the sum of its proper divisors (22259201899410).

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

12121001221230 is a wasteful number, since it uses less digits than its factorization.

12121001221230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226526 (or 226523 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12121001221230 its reverse (3212210012121), we get a palindrome (15333211233351).

The spelling of 12121001221230 in words is "twelve trillion, one hundred twenty-one billion, one million, two hundred twenty-one thousand, two hundred thirty".