100212323440 has 80 divisors (see below), whose sum is σ = 244625726880. Its totient is φ = 38124979200.

The previous prime is 100212323429. The next prime is 100212323459. The reversal of 100212323440 is 44323212001.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166911 + ... + 477790.

It is an arithmetic number, because the mean of its divisors is an integer number (3057821586).

Almost surely, 2^100212323440 is an apocalyptic number.

100212323440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100212323440 is an abundant number, since it is smaller than the sum of its proper divisors (144413403440).

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

100212323440 is a wasteful number, since it uses less digits than its factorization.

100212323440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644810 (or 644804 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 100212323440 its reverse (44323212001), we get a palindrome (144535535441).

The spelling of 100212323440 in words is "one hundred billion, two hundred twelve million, three hundred twenty-three thousand, four hundred forty".