7213278001 has 4 divisors (see below), whose sum is σ = 7214028400. Its totient is φ = 7212527604.

The previous prime is 7213277987. The next prime is 7213278019. The reversal of 7213278001 is 1008723127.

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: 1008723127 = 17471 ⋅57737.

It is a cyclic number.

It is not a de Polignac number, because 7213278001 - 2¹⁵ = 7213245233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7213278071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360591 + ... + 380068.

It is an arithmetic number, because the mean of its divisors is an integer number (1803507100).

Almost surely, 2^7213278001 is an apocalyptic number.

It is an amenable number.

7213278001 is a deficient number, since it is larger than the sum of its proper divisors (750399).

7213278001 is an equidigital number, since it uses as much as digits as its factorization.

7213278001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750398.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 7213278001 is about 84931.0190743052. The cubic root of 7213278001 is about 1932.1650559224.

The spelling of 7213278001 in words is "seven billion, two hundred thirteen million, two hundred seventy-eight thousand, one".