7021034521 has 2 divisors, whose sum is σ = 7021034522. Its totient is φ = 7021034520.

The previous prime is 7021034507. The next prime is 7021034551. The reversal of 7021034521 is 1254301207.

It is a happy number.

7021034521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4588572121 + 2432462400 = 67739^2 + 49320^2 .

It is a cyclic number.

It is not a de Polignac number, because 7021034521 - 2²⁵ = 6987480089 is a prime.

It is not a weakly prime, because it can be changed into another prime (7021034551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3510517260 + 3510517261.

It is an arithmetic number, because the mean of its divisors is an integer number (3510517261).

Almost surely, 2^7021034521 is an apocalyptic number.

It is an amenable number.

7021034521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7021034521 is an equidigital number, since it uses as much as digits as its factorization.

7021034521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 7021034521 is about 83791.6136674787. The cubic root of 7021034521 is about 1914.8453425128.

Adding to 7021034521 its reverse (1254301207), we get a palindrome (8275335728).

The spelling of 7021034521 in words is "seven billion, twenty-one million, thirty-four thousand, five hundred twenty-one".