7070201921 has 2 divisors, whose sum is σ = 7070201922. Its totient is φ = 7070201920.

The previous prime is 7070201861. The next prime is 7070201923. The reversal of 7070201921 is 1291020707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7022440000 + 47761921 = 83800^2 + 6911^2 .

It is an emirp because it is prime and its reverse (1291020707) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7070201921 is a prime.

Together with 7070201923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7070201923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3535100960 + 3535100961.

It is an arithmetic number, because the mean of its divisors is an integer number (3535100961).

Almost surely, 2^7070201921 is an apocalyptic number.

It is an amenable number.

7070201921 is a deficient number, since it is larger than the sum of its proper divisors (1).

7070201921 is an equidigital number, since it uses as much as digits as its factorization.

7070201921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 7070201921 is about 84084.4927498525. The cubic root of 7070201921 is about 1919.3047541543.

The spelling of 7070201921 in words is "seven billion, seventy million, two hundred one thousand, nine hundred twenty-one".