10021172 has 24 divisors (see below), whose sum is σ = 20111616. Its totient is φ = 4279968.

The previous prime is 10021163. The next prime is 10021213. The reversal of 10021172 is 27112001.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12578 + ... + 13350.

It is an arithmetic number, because the mean of its divisors is an integer number (837984).

Almost surely, 2^10021172 is an apocalyptic number.

It is an amenable number.

10021172 is an abundant number, since it is smaller than the sum of its proper divisors (10090444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10021172 is a wasteful number, since it uses less digits than its factorization.

10021172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 10021172 is about 3165.6234772948. The cubic root of 10021172 is about 215.5954074631.

Adding to 10021172 its reverse (27112001), we get a palindrome (37133173).

The spelling of 10021172 in words is "ten million, twenty-one thousand, one hundred seventy-two".