223121364 has 12 divisors (see below), whose sum is σ = 520616544. Its totient is φ = 74373784.

The previous prime is 223121357. The next prime is 223121369. The reversal of 223121364 is 463121322.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×223121364³ (a number of 26 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223121369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9296712 + ... + 9296735.

It is an arithmetic number, because the mean of its divisors is an integer number (43384712).

Almost surely, 2^223121364 is an apocalyptic number.

It is an amenable number.

223121364 is an abundant number, since it is smaller than the sum of its proper divisors (297495180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223121364 is a wasteful number, since it uses less digits than its factorization.

223121364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18593454 (or 18593452 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 223121364 is about 14937.2475376155. The cubic root of 223121364 is about 606.5226894711.

Adding to 223121364 its reverse (463121322), we get a palindrome (686242686).

The spelling of 223121364 in words is "two hundred twenty-three million, one hundred twenty-one thousand, three hundred sixty-four".