11111111101010 has 8 divisors (see below), whose sum is σ = 19999999981836. Its totient is φ = 4444444440400.

The previous prime is 11111111101003. The next prime is 11111111101099. The reversal of 11111111101010 is 1010111111111.

It can be written as a sum of positive squares in 2 ways, for example, as 9761069281441 + 1350041819569 = 3124271^2 + 1161913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 11111111100982 and 11111111101000.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 555555555041 + ... + 555555555060.

Almost surely, 2^{11111111101010} is an apocalyptic number.

11111111101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111111101010 is a deficient number, since it is larger than the sum of its proper divisors (8888888880826).

11111111101010 is a wasteful number, since it uses less digits than its factorization.

11111111101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111111110108.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 11111111101010 its reverse (1010111111111), we get a palindrome (12121222212121).

The spelling of 11111111101010 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred one thousand, ten".