21120002010002 has 64 divisors (see below), whose sum is σ = 38354849844480. Its totient is φ = 8520295827456.

The previous prime is 21120002009957. The next prime is 21120002010013. The reversal of 21120002010002 is 20001020002112.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76113338 + ... + 76390314.

It is an arithmetic number, because the mean of its divisors is an integer number (599294528820).

Almost surely, 2^{21120002010002} is an apocalyptic number.

21120002010002 is a deficient number, since it is larger than the sum of its proper divisors (17234847834478).

21120002010002 is a wasteful number, since it uses less digits than its factorization.

21120002010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278835.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21120002010002 its reverse (20001020002112), we get a palindrome (41121022012114).

The spelling of 21120002010002 in words is "twenty-one trillion, one hundred twenty billion, two million, ten thousand, two".