20020112021011 has 4 divisors (see below), whose sum is σ = 21073802127400. Its totient is φ = 18966421914624.

The previous prime is 20020112021009. The next prime is 20020112021017. The reversal of 20020112021011 is 11012021102002.

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 20020112021011 - 2¹ = 20020112021009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020112020982 and 20020112021000.

It is not an unprimeable number, because it can be changed into a prime (20020112021017) 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, 526845053166 + ... + 526845053203.

It is an arithmetic number, because the mean of its divisors is an integer number (5268450531850).

Almost surely, 2^{20020112021011} is an apocalyptic number.

20020112021011 is a deficient number, since it is larger than the sum of its proper divisors (1053690106389).

20020112021011 is a wasteful number, since it uses less digits than its factorization.

20020112021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053690106388.

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

Adding to 20020112021011 its reverse (11012021102002), we get a palindrome (31032133123013).

The spelling of 20020112021011 in words is "twenty trillion, twenty billion, one hundred twelve million, twenty-one thousand, eleven".