7214144621 has 2 divisors, whose sum is σ = 7214144622. Its totient is φ = 7214144620.

The previous prime is 7214144579. The next prime is 7214144629. The reversal of 7214144621 is 1264414127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4466917225 + 2747227396 = 66835^2 + 52414^2 .

It is an emirp because it is prime and its reverse (1264414127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7214144621 - 2¹⁰ = 7214143597 is a prime.

It is a super-2 number, since 2×7214144621² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7214144629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3607072310 + 3607072311.

It is an arithmetic number, because the mean of its divisors is an integer number (3607072311).

Almost surely, 2^7214144621 is an apocalyptic number.

It is an amenable number.

7214144621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7214144621 is an equidigital number, since it uses as much as digits as its factorization.

7214144621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 32.

The square root of 7214144621 is about 84936.1208261832. The cubic root of 7214144621 is about 1932.2424310921.

Adding to 7214144621 its reverse (1264414127), we get a palindrome (8478558748).

The spelling of 7214144621 in words is "seven billion, two hundred fourteen million, one hundred forty-four thousand, six hundred twenty-one".