22507123 has 2 divisors, whose sum is σ = 22507124. Its totient is φ = 22507122.

The previous prime is 22507117. The next prime is 22507157. The reversal of 22507123 is 32170522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22507123 - 2⁹ = 22506611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22507094 and 22507103.

It is not a weakly prime, because it can be changed into another prime (22507183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11253561 + 11253562.

It is an arithmetic number, because the mean of its divisors is an integer number (11253562).

Almost surely, 2^22507123 is an apocalyptic number.

22507123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22507123 is an equidigital number, since it uses as much as digits as its factorization.

22507123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 22507123 is about 4744.1672609637. The cubic root of 22507123 is about 282.3405966306.

Adding to 22507123 its reverse (32170522), we get a palindrome (54677645).

The spelling of 22507123 in words is "twenty-two million, five hundred seven thousand, one hundred twenty-three".