1000022172 has 24 divisors (see below), whose sum is σ = 2340005136. Its totient is φ = 332395008.

The previous prime is 1000022081. The next prime is 1000022173. The reversal of 1000022172 is 2712200001.

1000022172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000022173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113803 + ... + 122274.

It is an arithmetic number, because the mean of its divisors is an integer number (97500214).

Almost surely, 2^1000022172 is an apocalyptic number.

1000022172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000022172 is an abundant number, since it is smaller than the sum of its proper divisors (1339982964).

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

1000022172 is a wasteful number, since it uses less digits than its factorization.

1000022172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236437 (or 236435 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 1000022172 is about 31623.1271698420. The cubic root of 1000022172 is about 1000.0073906120.

Adding to 1000022172 its reverse (2712200001), we get a palindrome (3712222173).

The spelling of 1000022172 in words is "one billion, twenty-two thousand, one hundred seventy-two".