20012121110002 has 128 divisors (see below), whose sum is σ = 38690265600000. Its totient is φ = 7718585833728.

The previous prime is 20012121109963. The next prime is 20012121110011. The reversal of 20012121110002 is 20001112121002.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 938512113 + ... + 938533435.

It is an arithmetic number, because the mean of its divisors is an integer number (302267700000).

Almost surely, 2^{20012121110002} is an apocalyptic number.

20012121110002 is a deficient number, since it is larger than the sum of its proper divisors (18678144489998).

20012121110002 is a wasteful number, since it uses less digits than its factorization.

20012121110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24885 (or 24871 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20012121110002 its reverse (20001112121002), we get a palindrome (40013233231004).

The spelling of 20012121110002 in words is "twenty trillion, twelve billion, one hundred twenty-one million, one hundred ten thousand, two".