223121422 has 4 divisors (see below), whose sum is σ = 334682136. Its totient is φ = 111560710.

The previous prime is 223121419. The next prime is 223121441. The reversal of 223121422 is 224121322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224121322 = 2 ⋅112060661.

It is a super-3 number, since 3×223121422³ (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 223121422.

It is a congruent number.

It is an unprimeable number.

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, 55780354 + ... + 55780357.

It is an arithmetic number, because the mean of its divisors is an integer number (83670534).

Almost surely, 2^223121422 is an apocalyptic number.

223121422 is a deficient number, since it is larger than the sum of its proper divisors (111560714).

223121422 is a wasteful number, since it uses less digits than its factorization.

223121422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111560713.

The product of its digits is 384, while the sum is 19.

The square root of 223121422 is about 14937.2494790708. The cubic root of 223121422 is about 606.5227420259.

Adding to 223121422 its reverse (224121322), we get a palindrome (447242744).

It can be divided in two parts, 2231 and 21422, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 223121422 in words is "two hundred twenty-three million, one hundred twenty-one thousand, four hundred twenty-two".