7021348981 has 2 divisors, whose sum is σ = 7021348982. Its totient is φ = 7021348980.

The previous prime is 7021348963. The next prime is 7021349017. The reversal of 7021348981 is 1898431207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3975302500 + 3046046481 = 63050^2 + 55191^2 .

It is an emirp because it is prime and its reverse (1898431207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7021348981 - 2¹⁵ = 7021316213 is a prime.

It is a super-2 number, since 2×7021348981² = 98598683025979476722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7021348921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3510674490 + 3510674491.

It is an arithmetic number, because the mean of its divisors is an integer number (3510674491).

Almost surely, 2^7021348981 is an apocalyptic number.

It is an amenable number.

7021348981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7021348981 is an equidigital number, since it uses as much as digits as its factorization.

7021348981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 7021348981 is about 83793.4900872377. The cubic root of 7021348981 is about 1914.8739296237.

The spelling of 7021348981 in words is "seven billion, twenty-one million, three hundred forty-eight thousand, nine hundred eighty-one".