23222015 has 4 divisors (see below), whose sum is σ = 27866424. Its totient is φ = 18577608.

The previous prime is 23221997. The next prime is 23222033. The reversal of 23222015 is 51022232.

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

It is an interprime number because it is at equal distance from previous prime (23221997) and next prime (23222033).

It is a cyclic number.

It is not a de Polignac number, because 23222015 - 2⁶ = 23221951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23221984 and 23222002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2322197 + ... + 2322206.

It is an arithmetic number, because the mean of its divisors is an integer number (6966606).

Almost surely, 2^23222015 is an apocalyptic number.

23222015 is a deficient number, since it is larger than the sum of its proper divisors (4644409).

23222015 is an equidigital number, since it uses as much as digits as its factorization.

23222015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644408.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 23222015 is about 4818.9225974278. The cubic root of 23222015 is about 285.2988145286.

Adding to 23222015 its reverse (51022232), we get a palindrome (74244247).

The spelling of 23222015 in words is "twenty-three million, two hundred twenty-two thousand, fifteen".