32100012 has 144 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 8418816.

The previous prime is 32099999. The next prime is 32100017. The reversal of 32100012 is 21000123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 32099967 and 32100003.

It is not an unprimeable number, because it can be changed into a prime (32100017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 252693 + ... + 252819.

It is an arithmetic number, because the mean of its divisors is an integer number (698880).

Almost surely, 2^32100012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32100012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50319360).

32100012 is an abundant number, since it is smaller than the sum of its proper divisors (68538708).

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

32100012 is a wasteful number, since it uses less digits than its factorization.

32100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 32100012 is about 5665.6872486928. The cubic root of 32100012 is about 317.8106146574.

Adding to 32100012 its reverse (21000123), we get a palindrome (53100135).

It can be divided in two parts, 3 and 2100012, that multiplied together give a palindrome (6300036).

The spelling of 32100012 in words is "thirty-two million, one hundred thousand, twelve".