222421023 has 48 divisors (see below), whose sum is σ = 368982432. Its totient is φ = 127872000.

The previous prime is 222421021. The next prime is 222421027. The reversal of 222421023 is 320124222.

222421023 is a `hidden beast` number, since 222 + 421 + 0 + 23 = 666.

It is not a de Polignac number, because 222421023 - 2¹ = 222421021 is a prime.

It is a super-2 number, since 2×222421023² = 98942222944733058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222420987 and 222421005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222421021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 149443 + ... + 150923.

It is an arithmetic number, because the mean of its divisors is an integer number (7687134).

Almost surely, 2^222421023 is an apocalyptic number.

222421023 is a deficient number, since it is larger than the sum of its proper divisors (146561409).

222421023 is a wasteful number, since it uses less digits than its factorization.

222421023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1573 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 222421023 is about 14913.7863401619. The cubic root of 222421023 is about 605.8874329359.

Adding to 222421023 its reverse (320124222), we get a palindrome (542545245).

The spelling of 222421023 in words is "two hundred twenty-two million, four hundred twenty-one thousand, twenty-three".