72215056201 has 4 divisors (see below), whose sum is σ = 72766316304. Its totient is φ = 71663796100.

The previous prime is 72215056139. The next prime is 72215056217. The reversal of 72215056201 is 10265051227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10265051227 = 523 ⋅19627249.

It is a cyclic number.

It is not a de Polignac number, because 72215056201 - 2¹⁹ = 72214531913 is a prime.

It is a super-2 number, since 2×72215056201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72215056231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275629855 + ... + 275630116.

It is an arithmetic number, because the mean of its divisors is an integer number (18191579076).

Almost surely, 2^72215056201 is an apocalyptic number.

It is an amenable number.

72215056201 is a deficient number, since it is larger than the sum of its proper divisors (551260103).

72215056201 is a wasteful number, since it uses less digits than its factorization.

72215056201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551260102.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 72215056201 in words is "seventy-two billion, two hundred fifteen million, fifty-six thousand, two hundred one".