20102011110021 has 32 divisors (see below), whose sum is σ = 28306681970688. Its totient is φ = 12670312547520.

The previous prime is 20102011109987. The next prime is 20102011110089. The reversal of 20102011110021 is 12001111020102.

It is not a de Polignac number, because 20102011110021 - 2²² = 20102006915717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102011109979 and 20102011110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102011110521) 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 31 ways as a sum of consecutive naturals, for example, 1693675 + ... + 6562968.

It is an arithmetic number, because the mean of its divisors is an integer number (884583811584).

Almost surely, 2^{20102011110021} is an apocalyptic number.

It is an amenable number.

20102011110021 is a deficient number, since it is larger than the sum of its proper divisors (8204670860667).

20102011110021 is a wasteful number, since it uses less digits than its factorization.

20102011110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8257281.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20102011110021 its reverse (12001111020102), we get a palindrome (32103122130123).

The spelling of 20102011110021 in words is "twenty trillion, one hundred two billion, eleven million, one hundred ten thousand, twenty-one".