12213121002000 has 160 divisors (see below), whose sum is σ = 39377101370880. Its totient is φ = 3256666905600.

The previous prime is 12213121001981. The next prime is 12213121002073. The reversal of 12213121002000 is 20012131221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158835564 + ... + 158912436.

It is an arithmetic number, because the mean of its divisors is an integer number (246106883568).

Almost surely, 2^{12213121002000} is an apocalyptic number.

12213121002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213121002000 is an abundant number, since it is smaller than the sum of its proper divisors (27163980368880).

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

12213121002000 is a wasteful number, since it uses less digits than its factorization.

12213121002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103378 (or 103362 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12213121002000 its reverse (20012131221), we get a palindrome (12233133133221).

The spelling of 12213121002000 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty-one million, two thousand".