223121648 has 10 divisors (see below), whose sum is σ = 432298224. Its totient is φ = 111560816.

The previous prime is 223121641. The next prime is 223121659. The reversal of 223121648 is 846121322.

It is a happy number.

It is a super-3 number, since 3×223121648³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223121648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223121641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6972536 + ... + 6972567.

Almost surely, 2^223121648 is an apocalyptic number.

It is an amenable number.

223121648 is a deficient number, since it is larger than the sum of its proper divisors (209176576).

223121648 is a wasteful number, since it uses less digits than its factorization.

223121648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13945111 (or 13945105 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 223121648 is about 14937.2570440493. The cubic root of 223121648 is about 606.5229468084.

The spelling of 223121648 in words is "two hundred twenty-three million, one hundred twenty-one thousand, six hundred forty-eight".