220021111101 has 64 divisors (see below), whose sum is σ = 340890716160. Its totient is φ = 124830720000.

The previous prime is 220021111087. The next prime is 220021111109. The reversal of 220021111101 is 101111120022.

It is not a de Polignac number, because 220021111101 - 2²² = 220016916797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021111109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18266641 + ... + 18278681.

It is an arithmetic number, because the mean of its divisors is an integer number (5326417440).

Almost surely, 2^220021111101 is an apocalyptic number.

It is an amenable number.

220021111101 is a deficient number, since it is larger than the sum of its proper divisors (120869605059).

220021111101 is a wasteful number, since it uses less digits than its factorization.

220021111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12418.

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

Adding to 220021111101 its reverse (101111120022), we get a palindrome (321132231123).

The spelling of 220021111101 in words is "two hundred twenty billion, twenty-one million, one hundred eleven thousand, one hundred one".