221657273332130 has 128 divisors (see below), whose sum is σ = 408264038804160. Its totient is φ = 86622842880000.

The previous prime is 221657273332129. The next prime is 221657273332139. The reversal of 221657273332130 is 31233372756122.

It can be written as a sum of positive squares in 32 ways, for example, as 71018053782841 + 150639219549289 = 8427221^2 + 12273517^2 .

It is not an unprimeable number, because it can be changed into a prime (221657273332139) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62810220206 + ... + 62810223734.

Almost surely, 2^{221657273332130} is an apocalyptic number.

221657273332130 is a deficient number, since it is larger than the sum of its proper divisors (186606765472030).

221657273332130 is a wasteful number, since it uses less digits than its factorization.

221657273332130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016.

The product of its (nonzero) digits is 1905120, while the sum is 47.

The spelling of 221657273332130 in words is "two hundred twenty-one trillion, six hundred fifty-seven billion, two hundred seventy-three million, three hundred thirty-two thousand, one hundred thirty".