7213212506 has 8 divisors (see below), whose sum is σ = 11456278740. Its totient is φ = 3394452928.

The previous prime is 7213212481. The next prime is 7213212541. The reversal of 7213212506 is 6052123127.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6184406881 + 1028805625 = 78641^2 + 32075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 106076621 + ... + 106076688.

Almost surely, 2^7213212506 is an apocalyptic number.

7213212506 is a deficient number, since it is larger than the sum of its proper divisors (4243066234).

7213212506 is a wasteful number, since it uses less digits than its factorization.

7213212506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212153328.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 7213212506 is about 84930.6334958123. The cubic root of 7213212506 is about 1932.1592080248.

The spelling of 7213212506 in words is "seven billion, two hundred thirteen million, two hundred twelve thousand, five hundred six".