20200002211121 has 4 divisors (see below), whose sum is σ = 20201060875044. Its totient is φ = 20198943547200.

The previous prime is 20200002211099. The next prime is 20200002211139. The reversal of 20200002211121 is 12111220000202.

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 6302308993600 + 13897693217521 = 2510440^2 + 3727961^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200002211121 - 2¹⁰ = 20200002210097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200002211096 and 20200002211105.

It is not an unprimeable number, because it can be changed into a prime (20200002211171) 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, 529303340 + ... + 529341501.

It is an arithmetic number, because the mean of its divisors is an integer number (5050265218761).

Almost surely, 2^{20200002211121} is an apocalyptic number.

It is an amenable number.

20200002211121 is a deficient number, since it is larger than the sum of its proper divisors (1058663923).

20200002211121 is a wasteful number, since it uses less digits than its factorization.

20200002211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058663922.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20200002211121 its reverse (12111220000202), we get a palindrome (32311222211323).

The spelling of 20200002211121 in words is "twenty trillion, two hundred billion, two million, two hundred eleven thousand, one hundred twenty-one".