12121002221002 has 16 divisors (see below), whose sum is σ = 18261840066624. Its totient is φ = 6033743100000.

The previous prime is 12121002220993. The next prime is 12121002221089. The reversal of 12121002221002 is 20012220012121.

It is a happy 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, 4063899 + ... + 6384142.

It is an arithmetic number, because the mean of its divisors is an integer number (1141365004164).

Almost surely, 2^{12121002221002} is an apocalyptic number.

12121002221002 is a deficient number, since it is larger than the sum of its proper divisors (6140837845622).

12121002221002 is a wasteful number, since it uses less digits than its factorization.

12121002221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450605.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12121002221002 its reverse (20012220012121), we get a palindrome (32133222233123).

The spelling of 12121002221002 in words is "twelve trillion, one hundred twenty-one billion, two million, two hundred twenty-one thousand, two".