221021220110103 has 64 divisors (see below), whose sum is σ = 387513640396800. Its totient is φ = 121818687540480.

The previous prime is 221021220110027. The next prime is 221021220110137. The reversal of 221021220110103 is 301011022120122.

221021220110103 is a `hidden beast` number, since 2 + 210 + 21 + 220 + 110 + 103 = 666.

It is not a de Polignac number, because 221021220110103 - 2²⁰ = 221021219061527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221021220110003) 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, 15123358 + ... + 25899003.

It is an arithmetic number, because the mean of its divisors is an integer number (6054900631200).

Almost surely, 2^{221021220110103} is an apocalyptic number.

221021220110103 is a deficient number, since it is larger than the sum of its proper divisors (166492420286697).

221021220110103 is a wasteful number, since it uses less digits than its factorization.

221021220110103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41023389 (or 41023383 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 221021220110103 its reverse (301011022120122), we get a palindrome (522032242230225).

The spelling of 221021220110103 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred twenty million, one hundred ten thousand, one hundred three".