11111011101010 has 8 divisors (see below), whose sum is σ = 19999819981836. Its totient is φ = 4444404440400.

The previous prime is 11111011101007. The next prime is 11111011101053. The reversal of 11111011101010 is 1010111011111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11099338675489 + 11672425521 = 3331567^2 + 108039^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 1111101110101 = 11111011101010 / (1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 0 + 1 + 0 + 1 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555550555041 + ... + 555550555060.

Almost surely, 2^{11111011101010} is an apocalyptic number.

11111011101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111011101010 is a deficient number, since it is larger than the sum of its proper divisors (8888808880826).

11111011101010 is a wasteful number, since it uses less digits than its factorization.

11111011101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111101110108.

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

Adding to 11111011101010 its reverse (1010111011111), we get a palindrome (12121122112121).

The spelling of 11111011101010 in words is "eleven trillion, one hundred eleven billion, eleven million, one hundred one thousand, ten".