221020122203 has 8 divisors (see below), whose sum is σ = 235511890272. Its totient is φ = 206693974656.

The previous prime is 221020122181. The next prime is 221020122223. The reversal of 221020122203 is 302221020122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221020122203 - 2⁶ = 221020122139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221020122223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41402375 + ... + 41407712.

It is an arithmetic number, because the mean of its divisors is an integer number (29438986284).

Almost surely, 2^221020122203 is an apocalyptic number.

221020122203 is a deficient number, since it is larger than the sum of its proper divisors (14491768069).

221020122203 is a wasteful number, since it uses less digits than its factorization.

221020122203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82810261.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 221020122203 its reverse (302221020122), we get a palindrome (523241142325).

The spelling of 221020122203 in words is "two hundred twenty-one billion, twenty million, one hundred twenty-two thousand, two hundred three".