20003002202101 has 4 divisors (see below), whose sum is σ = 20113516026604. Its totient is φ = 19892488377600.

The previous prime is 20003002202083. The next prime is 20003002202177. The reversal of 20003002202101 is 10120220030002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1494714082225 + 18508288119876 = 1222585^2 + 4302126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003002202101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003002262101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55256911980 + ... + 55256912341.

It is an arithmetic number, because the mean of its divisors is an integer number (5028379006651).

Almost surely, 2^{20003002202101} is an apocalyptic number.

It is an amenable number.

20003002202101 is a deficient number, since it is larger than the sum of its proper divisors (110513824503).

20003002202101 is a wasteful number, since it uses less digits than its factorization.

20003002202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110513824502.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20003002202101 its reverse (10120220030002), we get a palindrome (30123222232103).

The spelling of 20003002202101 in words is "twenty trillion, three billion, two million, two hundred two thousand, one hundred one".