223426021 has 16 divisors (see below), whose sum is σ = 283859968. Its totient is φ = 171072000.

The previous prime is 223426009. The next prime is 223426033. The reversal of 223426021 is 120624322.

It is an interprime number because it is at equal distance from previous prime (223426009) and next prime (223426033).

It is a cyclic number.

It is not a de Polignac number, because 223426021 - 2⁵ = 223425989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223425983 and 223426001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223426051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36780 + ... + 42421.

It is an arithmetic number, because the mean of its divisors is an integer number (17741248).

Almost surely, 2^223426021 is an apocalyptic number.

It is an amenable number.

223426021 is a deficient number, since it is larger than the sum of its proper divisors (60433947).

223426021 is a wasteful number, since it uses less digits than its factorization.

223426021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79252.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 223426021 is about 14947.4419550637. The cubic root of 223426021 is about 606.7986190389.

The spelling of 223426021 in words is "two hundred twenty-three million, four hundred twenty-six thousand, twenty-one".