7071227621 has 4 divisors (see below), whose sum is σ = 7076945292. Its totient is φ = 7065509952.

The previous prime is 7071227561. The next prime is 7071227629. The reversal of 7071227621 is 1267221707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1267221707 = 2711 ⋅467437.

It can be written as a sum of positive squares in 2 ways, for example, as 3565403521 + 3505824100 = 59711^2 + 59210^2 .

It is a cyclic number.

It is not a de Polignac number, because 7071227621 - 2¹⁰ = 7071226597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7071227629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2856980 + ... + 2859453.

It is an arithmetic number, because the mean of its divisors is an integer number (1769236323).

Almost surely, 2^7071227621 is an apocalyptic number.

It is an amenable number.

7071227621 is a deficient number, since it is larger than the sum of its proper divisors (5717671).

7071227621 is a wasteful number, since it uses less digits than its factorization.

7071227621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717670.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 7071227621 is about 84090.5917508017. The cubic root of 7071227621 is about 1919.3975631819.

The spelling of 7071227621 in words is "seven billion, seventy-one million, two hundred twenty-seven thousand, six hundred twenty-one".