223120402 has 4 divisors (see below), whose sum is σ = 334680606. Its totient is φ = 111560200.

The previous prime is 223120399. The next prime is 223120409. The reversal of 223120402 is 204021322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 193515921 + 29604481 = 13911^2 + 5441^2 .

It is a super-3 number, since 3×223120402³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223120409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55780099 + ... + 55780102.

Almost surely, 2^223120402 is an apocalyptic number.

223120402 is a deficient number, since it is larger than the sum of its proper divisors (111560204).

223120402 is a wasteful number, since it uses less digits than its factorization.

223120402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111560203.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 223120402 is about 14937.2153361997. The cubic root of 223120402 is about 606.5218177846.

Adding to 223120402 its reverse (204021322), we get a palindrome (427141724).

The spelling of 223120402 in words is "two hundred twenty-three million, one hundred twenty thousand, four hundred two".