226447071521 has 12 divisors (see below), whose sum is σ = 251188175700. Its totient is φ = 203972329440.

The previous prime is 226447071517. The next prime is 226447071547. The reversal of 226447071521 is 125170744622.

It can be written as a sum of positive squares in 2 ways, for example, as 204145830625 + 22301240896 = 451825^2 + 149336^2 .

It is not a de Polignac number, because 226447071521 - 2² = 226447071517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (226447071121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8571506 + ... + 8597883.

It is an arithmetic number, because the mean of its divisors is an integer number (20932347975).

Almost surely, 2^226447071521 is an apocalyptic number.

It is an amenable number.

226447071521 is a deficient number, since it is larger than the sum of its proper divisors (24741104179).

226447071521 is a wasteful number, since it uses less digits than its factorization.

226447071521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17169520 (or 17169509 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 226447071521 in words is "two hundred twenty-six billion, four hundred forty-seven million, seventy-one thousand, five hundred twenty-one".