221020211103 has 16 divisors (see below), whose sum is σ = 302817306240. Its totient is φ = 143289146016.

The previous prime is 221020211063. The next prime is 221020211143. The reversal of 221020211103 is 301112020122.

It is an interprime number because it is at equal distance from previous prime (221020211063) and next prime (221020211143).

It is not a de Polignac number, because 221020211103 - 2²⁰ = 221019162527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020211143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310393 + ... + 733746.

It is an arithmetic number, because the mean of its divisors is an integer number (18926081640).

Almost surely, 2^221020211103 is an apocalyptic number.

221020211103 is a deficient number, since it is larger than the sum of its proper divisors (81797095137).

221020211103 is a wasteful number, since it uses less digits than its factorization.

221020211103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046086.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 221020211103 its reverse (301112020122), we get a palindrome (522132231225).

The spelling of 221020211103 in words is "two hundred twenty-one billion, twenty million, two hundred eleven thousand, one hundred three".