12121234002 has 24 divisors (see below), whose sum is σ = 27404529984. Its totient is φ = 3864741144.

The previous prime is 12121234001. The next prime is 12121234007. The reversal of 12121234002 is 20043212121.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (12121234001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14638758 + ... + 14639585.

It is an arithmetic number, because the mean of its divisors is an integer number (1141855416).

Almost surely, 2^12121234002 is an apocalyptic number.

12121234002 is an abundant number, since it is smaller than the sum of its proper divisors (15283295982).

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

12121234002 is a wasteful number, since it uses less digits than its factorization.

12121234002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29278374 (or 29278371 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12121234002 its reverse (20043212121), we get a palindrome (32164446123).

The spelling of 12121234002 in words is "twelve billion, one hundred twenty-one million, two hundred thirty-four thousand, two".