172021250223 has 12 divisors (see below), whose sum is σ = 255190684008. Its totient is φ = 111581351280.

The previous prime is 172021250179. The next prime is 172021250311. The reversal of 172021250223 is 322052120271.

172021250223 is a `hidden beast` number, since 172 + 0 + 21 + 250 + 223 = 666.

172021250223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172021250223 - 2²² = 172017055919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172021250123) 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 11 ways as a sum of consecutive naturals, for example, 258289833 + ... + 258290498.

It is an arithmetic number, because the mean of its divisors is an integer number (21265890334).

Almost surely, 2^172021250223 is an apocalyptic number.

172021250223 is a deficient number, since it is larger than the sum of its proper divisors (83169433785).

172021250223 is a wasteful number, since it uses less digits than its factorization.

172021250223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516580374 (or 516580371 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 172021250223 its reverse (322052120271), we get a palindrome (494073370494).

The spelling of 172021250223 in words is "one hundred seventy-two billion, twenty-one million, two hundred fifty thousand, two hundred twenty-three".