20002020111121 has 4 divisors (see below), whose sum is σ = 20341037401200. Its totient is φ = 19663002821044.

The previous prime is 20002020111113. The next prime is 20002020111137. The reversal of 20002020111121 is 12111102020002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20002020111121 - 2³ = 20002020111113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002020111721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169508644951 + ... + 169508645068.

It is an arithmetic number, because the mean of its divisors is an integer number (5085259350300).

Almost surely, 2^{20002020111121} is an apocalyptic number.

It is an amenable number.

20002020111121 is a deficient number, since it is larger than the sum of its proper divisors (339017290079).

20002020111121 is an equidigital number, since it uses as much as digits as its factorization.

20002020111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339017290078.

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

Adding to 20002020111121 its reverse (12111102020002), we get a palindrome (32113122131123).

The spelling of 20002020111121 in words is "twenty trillion, two billion, twenty million, one hundred eleven thousand, one hundred twenty-one".