7134219721 has 2 divisors, whose sum is σ = 7134219722. Its totient is φ = 7134219720.

The previous prime is 7134219679. The next prime is 7134219767. The reversal of 7134219721 is 1279124317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6996486025 + 137733696 = 83645^2 + 11736^2 .

It is a cyclic number.

It is not a de Polignac number, because 7134219721 - 2¹³ = 7134211529 is a prime.

It is a super-3 number, since 3×7134219721³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7134216721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3567109860 + 3567109861.

It is an arithmetic number, because the mean of its divisors is an integer number (3567109861).

Almost surely, 2^7134219721 is an apocalyptic number.

It is an amenable number.

7134219721 is a deficient number, since it is larger than the sum of its proper divisors (1).

7134219721 is an equidigital number, since it uses as much as digits as its factorization.

7134219721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 7134219721 is about 84464.3103387460. The cubic root of 7134219721 is about 1925.0801986939.

The spelling of 7134219721 in words is "seven billion, one hundred thirty-four million, two hundred nineteen thousand, seven hundred twenty-one".