12121120002 has 16 divisors (see below), whose sum is σ = 24396651072. Its totient is φ = 4014638160.

The previous prime is 12121119953. The next prime is 12121120009. The reversal of 12121120002 is 20002112121.

It is a self number, because there is not a number n which added to its sum of digits gives 12121120002.

It is not an unprimeable number, because it can be changed into a prime (12121120009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6432774 + ... + 6434657.

It is an arithmetic number, because the mean of its divisors is an integer number (1524790692).

Almost surely, 2^12121120002 is an apocalyptic number.

12121120002 is an abundant number, since it is smaller than the sum of its proper divisors (12275531070).

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

12121120002 is a wasteful number, since it uses less digits than its factorization.

12121120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12867593.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12121120002 its reverse (20002112121), we get a palindrome (32123232123).

The spelling of 12121120002 in words is "twelve billion, one hundred twenty-one million, one hundred twenty thousand, two".