223102121221 has 16 divisors (see below), whose sum is σ = 271720525824. Its totient is φ = 179024188464.

The previous prime is 223102121219. The next prime is 223102121321. The reversal of 223102121221 is 122121201322.

It is not a de Polignac number, because 223102121221 - 2¹ = 223102121219 is a prime.

It is a super-3 number, since 3×223102121221³ (a number of 35 digits) contains 333 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 (223102121321) 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, 14734215 + ... + 14749348.

It is an arithmetic number, because the mean of its divisors is an integer number (16982532864).

Almost surely, 2^223102121221 is an apocalyptic number.

It is an amenable number.

223102121221 is a deficient number, since it is larger than the sum of its proper divisors (48618404603).

223102121221 is a wasteful number, since it uses less digits than its factorization.

223102121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29483640.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 223102121221 its reverse (122121201322), we get a palindrome (345223322543).

The spelling of 223102121221 in words is "two hundred twenty-three billion, one hundred two million, one hundred twenty-one thousand, two hundred twenty-one".