227173297129 has 9 divisors (see below), whose sum is σ = 232132501911. Its totient is φ = 222317897880.

The previous prime is 227173297121. The next prime is 227173297237. The reversal of 227173297129 is 921792371722.

The square root of 227173297129 is 476627.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 41015565529 + 186157731600 = 202523^2 + 431460^2 .

It is not a de Polignac number, because 227173297129 - 2³ = 227173297121 is a prime.

It is a super-3 number, since 3×227173297129³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227173297121) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22396399 + ... + 22406539.

Almost surely, 2^227173297129 is an apocalyptic number.

227173297129 is the 476627-th square number.

227173297129 is the 238314-th centered octagonal number.

It is an amenable number.

227173297129 is a deficient number, since it is larger than the sum of its proper divisors (4959204782).

227173297129 is an frugal number, since it uses more digits than its factorization.

227173297129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20376 (or 10188 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 52.

The spelling of 227173297129 in words is "two hundred twenty-seven billion, one hundred seventy-three million, two hundred ninety-seven thousand, one hundred twenty-nine".