72212443 has 2 divisors, whose sum is σ = 72212444. Its totient is φ = 72212442.

The previous prime is 72212431. The next prime is 72212453. The reversal of 72212443 is 34421227.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34421227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72212443 - 2⁵ = 72212411 is a prime.

It is not a weakly prime, because it can be changed into another prime (72212453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36106221 + 36106222.

It is an arithmetic number, because the mean of its divisors is an integer number (36106222).

Almost surely, 2^72212443 is an apocalyptic number.

72212443 is a deficient number, since it is larger than the sum of its proper divisors (1).

72212443 is an equidigital number, since it uses as much as digits as its factorization.

72212443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 25.

The square root of 72212443 is about 8497.7904775300. The cubic root of 72212443 is about 416.4255288108.

The spelling of 72212443 in words is "seventy-two million, two hundred twelve thousand, four hundred forty-three".