12121122202002 has 64 divisors (see below), whose sum is σ = 29424958617600. Its totient is φ = 3668014841040.

The previous prime is 12121122201989. The next prime is 12121122202067. The reversal of 12121122202002 is 20020222112121.

It is a happy number.

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

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, 13602502 + ... + 14466177.

It is an arithmetic number, because the mean of its divisors is an integer number (459764978400).

Almost surely, 2^{12121122202002} is an apocalyptic number.

12121122202002 is an abundant number, since it is smaller than the sum of its proper divisors (17303836415598).

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

12121122202002 is a wasteful number, since it uses less digits than its factorization.

12121122202002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28069428 (or 28069422 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12121122202002 its reverse (20020222112121), we get a palindrome (32141344314123).

The spelling of 12121122202002 in words is "twelve trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred two thousand, two".