100144551021 has 16 divisors (see below), whose sum is σ = 137233265664. Its totient is φ = 64923115824.

The previous prime is 100144550983. The next prime is 100144551047. The reversal of 100144551021 is 120155441001.

It is not a de Polignac number, because 100144551021 - 2¹⁰ = 100144549997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100144550982 and 100144551000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100144551061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1680661 + ... + 1739226.

It is an arithmetic number, because the mean of its divisors is an integer number (8577079104).

Almost surely, 2^100144551021 is an apocalyptic number.

It is an amenable number.

100144551021 is a deficient number, since it is larger than the sum of its proper divisors (37088714643).

100144551021 is a wasteful number, since it uses less digits than its factorization.

100144551021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420160.

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 100144551021 its reverse (120155441001), we get a palindrome (220299992022).

The spelling of 100144551021 in words is "one hundred billion, one hundred forty-four million, five hundred fifty-one thousand, twenty-one".