20010121200002 has 32 divisors (see below), whose sum is σ = 31110208747200. Its totient is φ = 9646733371968.

The previous prime is 20010121199989. The next prime is 20010121200029. The reversal of 20010121200002 is 20000212101002.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1446128 + ... + 6489339.

It is an arithmetic number, because the mean of its divisors is an integer number (972194023350).

Almost surely, 2^{20010121200002} is an apocalyptic number.

20010121200002 is a deficient number, since it is larger than the sum of its proper divisors (11100087547198).

20010121200002 is a wasteful number, since it uses less digits than its factorization.

20010121200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7935890.

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

Adding to 20010121200002 its reverse (20000212101002), we get a palindrome (40010333301004).

The spelling of 20010121200002 in words is "twenty trillion, ten billion, one hundred twenty-one million, two hundred thousand, two".