72227123 has 2 divisors, whose sum is σ = 72227124. Its totient is φ = 72227122.

The previous prime is 72227119. The next prime is 72227159. The reversal of 72227123 is 32172227.

It is a weak prime.

It is an emirp because it is prime and its reverse (32172227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72227123 - 2² = 72227119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72227092 and 72227101.

It is not a weakly prime, because it can be changed into another prime (72227173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36113561 + 36113562.

It is an arithmetic number, because the mean of its divisors is an integer number (36113562).

Almost surely, 2^72227123 is an apocalyptic number.

72227123 is a deficient number, since it is larger than the sum of its proper divisors (1).

72227123 is an equidigital number, since it uses as much as digits as its factorization.

72227123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 26.

The square root of 72227123 is about 8498.6541875758. The cubic root of 72227123 is about 416.4537451509.

The spelling of 72227123 in words is "seventy-two million, two hundred twenty-seven thousand, one hundred twenty-three".