20110021220011 has 4 divisors (see below), whose sum is σ = 20110218597000. Its totient is φ = 20109823843024.

The previous prime is 20110021219991. The next prime is 20110021220033. The reversal of 20110021220011 is 11002212001102.

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 20110021220011 - 2⁵ = 20110021219979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110021219973 and 20110021220000.

It is not an unprimeable number, because it can be changed into a prime (20110021220071) 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, 98535586 + ... + 98739463.

It is an arithmetic number, because the mean of its divisors is an integer number (5027554649250).

Almost surely, 2^{20110021220011} is an apocalyptic number.

20110021220011 is a deficient number, since it is larger than the sum of its proper divisors (197376989).

20110021220011 is a wasteful number, since it uses less digits than its factorization.

20110021220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197376988.

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

Adding to 20110021220011 its reverse (11002212001102), we get a palindrome (31112233221113).

The spelling of 20110021220011 in words is "twenty trillion, one hundred ten billion, twenty-one million, two hundred twenty thousand, eleven".