100111111011010 has 48 divisors (see below), whose sum is σ = 198841779368568. Its totient is φ = 36262390292480.

The previous prime is 100111111010987. The next prime is 100111111011013. The reversal of 100111111011010 is 10110111111001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 100044464941729 + 66646069281 = 10002223^2 + 258159^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (100111111011013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160654897 + ... + 161276836.

Almost surely, 2^{100111111011010} is an apocalyptic number.

100111111011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100111111011010 is a deficient number, since it is larger than the sum of its proper divisors (98730668357558).

100111111011010 is a wasteful number, since it uses less digits than its factorization.

100111111011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321932019 (or 321932008 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 100111111011010 its reverse (10110111111001), we get a palindrome (110221222122011).

Subtracting from 100111111011010 its reverse (10110111111001), we obtain a palindrome (90000999900009).

The spelling of 100111111011010 in words is "one hundred trillion, one hundred eleven billion, one hundred eleven million, eleven thousand, ten".