7229012261 has 4 divisors (see below), whose sum is σ = 7229368524. Its totient is φ = 7228656000.

The previous prime is 7229012257. The next prime is 7229012291. The reversal of 7229012261 is 1622109227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5530748161 + 1698264100 = 74369^2 + 41210^2 .

It is a cyclic number.

It is not a de Polignac number, because 7229012261 - 2² = 7229012257 is a prime.

It is a super-3 number, since 3×7229012261³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7229012291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145730 + ... + 188931.

It is an arithmetic number, because the mean of its divisors is an integer number (1807342131).

Almost surely, 2^7229012261 is an apocalyptic number.

It is an amenable number.

7229012261 is a deficient number, since it is larger than the sum of its proper divisors (356263).

7229012261 is a wasteful number, since it uses less digits than its factorization.

7229012261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356262.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 7229012261 is about 85023.5982595420. The cubic root of 7229012261 is about 1933.5689072405.

The spelling of 7229012261 in words is "seven billion, two hundred twenty-nine million, twelve thousand, two hundred sixty-one".