202020120020011 has 4 divisors (see below), whose sum is σ = 202020155939800. Its totient is φ = 202020084100224.

The previous prime is 202020120020009. The next prime is 202020120020071. The reversal of 202020120020011 is 110020021020202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 202020120020011 - 2¹ = 202020120020009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202020120019973 and 202020120020000.

It is not an unprimeable number, because it can be changed into a prime (202020120020071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7488501 + ... + 21450358.

It is an arithmetic number, because the mean of its divisors is an integer number (50505038984950).

Almost surely, 2^{202020120020011} is an apocalyptic number.

202020120020011 is a deficient number, since it is larger than the sum of its proper divisors (35919789).

202020120020011 is an equidigital number, since it uses as much as digits as its factorization.

202020120020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35919788.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202020120020011 its reverse (110020021020202), we get a palindrome (312040141040213).

The spelling of 202020120020011 in words is "two hundred two trillion, twenty billion, one hundred twenty million, twenty thousand, eleven".