220021102111 has 4 divisors (see below), whose sum is σ = 220318831000. Its totient is φ = 219723373224.

The previous prime is 220021102109. The next prime is 220021102123. The reversal of 220021102111 is 111201120022.

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 220021102111 - 2¹ = 220021102109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220021102091 and 220021102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021102811) 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, 148863336 + ... + 148864813.

It is an arithmetic number, because the mean of its divisors is an integer number (55079707750).

Almost surely, 2^220021102111 is an apocalyptic number.

220021102111 is a deficient number, since it is larger than the sum of its proper divisors (297728889).

220021102111 is an equidigital number, since it uses as much as digits as its factorization.

220021102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297728888.

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

Adding to 220021102111 its reverse (111201120022), we get a palindrome (331222222133).

The spelling of 220021102111 in words is "two hundred twenty billion, twenty-one million, one hundred two thousand, one hundred eleven".