20210020112011 has 4 divisors (see below), whose sum is σ = 20453514330312. Its totient is φ = 19966525893712.

The previous prime is 20210020111979. The next prime is 20210020112039. The reversal of 20210020112011 is 11021102001202.

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 20210020112011 - 2⁵ = 20210020111979 is a prime.

It is a super-2 number, since 2×20210020112011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20210020111982 and 20210020112000.

It is not an unprimeable number, because it can be changed into a prime (20210020113011) 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, 121747109026 + ... + 121747109191.

It is an arithmetic number, because the mean of its divisors is an integer number (5113378582578).

Almost surely, 2^{20210020112011} is an apocalyptic number.

20210020112011 is a deficient number, since it is larger than the sum of its proper divisors (243494218301).

20210020112011 is an equidigital number, since it uses as much as digits as its factorization.

20210020112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243494218300.

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

Adding to 20210020112011 its reverse (11021102001202), we get a palindrome (31231122113213).

The spelling of 20210020112011 in words is "twenty trillion, two hundred ten billion, twenty million, one hundred twelve thousand, eleven".