100021243444 has 24 divisors (see below), whose sum is σ = 182713708800. Its totient is φ = 47853579840.

The previous prime is 100021243433. The next prime is 100021243451. The reversal of 100021243444 is 444342120001.

It is a super-2 number, since 2×100021243444² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 4520554 + ... + 4542625.

It is an arithmetic number, because the mean of its divisors is an integer number (7613071200).

Almost surely, 2^100021243444 is an apocalyptic number.

It is an amenable number.

100021243444 is a deficient number, since it is larger than the sum of its proper divisors (82692465356).

100021243444 is a wasteful number, since it uses less digits than its factorization.

100021243444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9063303 (or 9063301 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 100021243444 its reverse (444342120001), we get a palindrome (544363363445).

The spelling of 100021243444 in words is "one hundred billion, twenty-one million, two hundred forty-three thousand, four hundred forty-four".