7212997229 has 2 divisors, whose sum is σ = 7212997230. Its totient is φ = 7212997228.

The previous prime is 7212997219. The next prime is 7212997237. The reversal of 7212997229 is 9227992127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4174452100 + 3038545129 = 64610^2 + 55123^2 .

It is a cyclic number.

It is not a de Polignac number, because 7212997229 - 2²⁸ = 6944561773 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7212997219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606498614 + 3606498615.

It is an arithmetic number, because the mean of its divisors is an integer number (3606498615).

Almost surely, 2^7212997229 is an apocalyptic number.

It is an amenable number.

7212997229 is a deficient number, since it is larger than the sum of its proper divisors (1).

7212997229 is an equidigital number, since it uses as much as digits as its factorization.

7212997229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 50.

The square root of 7212997229 is about 84929.3661167914. The cubic root of 7212997229 is about 1932.1399861883.

The spelling of 7212997229 in words is "seven billion, two hundred twelve million, nine hundred ninety-seven thousand, two hundred twenty-nine".