100921100930 has 16 divisors (see below), whose sum is σ = 195631672824. Its totient is φ = 37263175680.

The previous prime is 100921100881. The next prime is 100921100953. The reversal of 100921100930 is 39001129001.

It can be written as a sum of positive squares in 4 ways, for example, as 77090077801 + 23831023129 = 277651^2 + 154373^2 .

It is a super-2 number, since 2×100921100930² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 100921100930.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388157951 + ... + 388158210.

Almost surely, 2^100921100930 is an apocalyptic number.

100921100930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100921100930 is a deficient number, since it is larger than the sum of its proper divisors (94710571894).

100921100930 is a wasteful number, since it uses less digits than its factorization.

100921100930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776316181.

The product of its (nonzero) digits is 486, while the sum is 26.

Adding to 100921100930 its reverse (39001129001), we get a palindrome (139922229931).

The spelling of 100921100930 in words is "one hundred billion, nine hundred twenty-one million, one hundred thousand, nine hundred thirty".