172022012 has 6 divisors (see below), whose sum is σ = 301038528. Its totient is φ = 86011004.

The previous prime is 172022009. The next prime is 172022017. The reversal of 172022012 is 210220271.

It is a super-2 number, since 2×172022012² = 59183145225056288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172022017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21502748 + ... + 21502755.

It is an arithmetic number, because the mean of its divisors is an integer number (50173088).

Almost surely, 2^172022012 is an apocalyptic number.

It is an amenable number.

172022012 is a deficient number, since it is larger than the sum of its proper divisors (129016516).

172022012 is a wasteful number, since it uses less digits than its factorization.

172022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43005507 (or 43005505 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 172022012 is about 13115.7162213888. The cubic root of 172022012 is about 556.1534995329.

Adding to 172022012 its reverse (210220271), we get a palindrome (382242283).

It can be divided in two parts, 1720 and 22012, that added together give a palindrome (23732).

The spelling of 172022012 in words is "one hundred seventy-two million, twenty-two thousand, twelve".