100322421012 has 144 divisors (see below), whose sum is σ = 292276857600. Its totient is φ = 28727758080.

The previous prime is 100322420941. The next prime is 100322421013. The reversal of 100322421012 is 210124223001.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100322421013) 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, 446814 + ... + 632682.

It is an arithmetic number, because the mean of its divisors is an integer number (2029700400).

Almost surely, 2^100322421012 is an apocalyptic number.

100322421012 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 100322421012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146138428800).

100322421012 is an abundant number, since it is smaller than the sum of its proper divisors (191954436588).

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

100322421012 is a wasteful number, since it uses less digits than its factorization.

100322421012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185966 (or 185961 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 100322421012 its reverse (210124223001), we get a palindrome (310446644013).

The spelling of 100322421012 in words is "one hundred billion, three hundred twenty-two million, four hundred twenty-one thousand, twelve".