100919101010 has 48 divisors (see below), whose sum is σ = 227567042136. Its totient is φ = 31939229952.

The previous prime is 100919100979. The next prime is 100919101021. The reversal of 100919101010 is 10101919001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 48308962849 + 52610138161 = 219793^2 + 229369^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7915067 + ... + 7927806.

Almost surely, 2^100919101010 is an apocalyptic number.

100919101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100919101010 is an abundant number, since it is smaller than the sum of its proper divisors (126647941126).

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

100919101010 is a wasteful number, since it uses less digits than its factorization.

100919101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15842907 (or 15842900 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 23.

The spelling of 100919101010 in words is "one hundred billion, nine hundred nineteen million, one hundred one thousand, ten".