72216127 has 4 divisors (see below), whose sum is σ = 72423400. Its totient is φ = 72008856.

The previous prime is 72216103. The next prime is 72216139. The reversal of 72216127 is 72161227.

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

It is a cyclic number.

It is not a de Polignac number, because 72216127 - 2⁷ = 72215999 is a prime.

It is a super-4 number, since 4×72216127⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72216095 and 72216104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72216167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103113 + ... + 103810.

It is an arithmetic number, because the mean of its divisors is an integer number (18105850).

Almost surely, 2^72216127 is an apocalyptic number.

72216127 is a deficient number, since it is larger than the sum of its proper divisors (207273).

72216127 is a wasteful number, since it uses less digits than its factorization.

72216127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207272.

The product of its digits is 2352, while the sum is 28.

The square root of 72216127 is about 8498.0072369939. The cubic root of 72216127 is about 416.4326101645.

The spelling of 72216127 in words is "seventy-two million, two hundred sixteen thousand, one hundred twenty-seven".