221100000121223 has 8 divisors (see below), whose sum is σ = 221113870486368. Its totient is φ = 221086130189184.

The previous prime is 221100000121219. The next prime is 221100000121229. The reversal of 221100000121223 is 322121000001122.

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 221100000121223 - 2² = 221100000121219 is a prime.

It is a super-2 number, since 2×221100000121223² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100000121229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2228264390 + ... + 2228363612.

It is an arithmetic number, because the mean of its divisors is an integer number (27639233810796).

Almost surely, 2^{221100000121223} is an apocalyptic number.

221100000121223 is a deficient number, since it is larger than the sum of its proper divisors (13870365145).

221100000121223 is an equidigital number, since it uses as much as digits as its factorization.

221100000121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216553.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221100000121223 its reverse (322121000001122), we get a palindrome (543221000122345).

The spelling of 221100000121223 in words is "two hundred twenty-one trillion, one hundred billion, one hundred twenty-one thousand, two hundred twenty-three".