100321332012 has 144 divisors (see below), whose sum is σ = 289972021248. Its totient is φ = 28947663360.

The previous prime is 100321331993. The next prime is 100321332029. The reversal of 100321332012 is 210233123001.

100321332012 is a `hidden beast` number, since 1 + 0 + 0 + 321 + 332 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2006388 + ... + 2055780.

It is an arithmetic number, because the mean of its divisors is an integer number (2013694592).

Almost surely, 2^100321332012 is an apocalyptic number.

100321332012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100321332012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144986010624).

100321332012 is an abundant number, since it is smaller than the sum of its proper divisors (189650689236).

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

100321332012 is a wasteful number, since it uses less digits than its factorization.

100321332012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49660 (or 49655 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 100321332012 its reverse (210233123001), we get a palindrome (310554455013).

The spelling of 100321332012 in words is "one hundred billion, three hundred twenty-one million, three hundred thirty-two thousand, twelve".