111111100101010 has 16 divisors (see below), whose sum is σ = 201941727564096. Its totient is φ = 44012940622128.

The previous prime is 111111100100993. The next prime is 111111100101013. The reversal of 111111100101010 is 10101001111111.

It is a happy number.

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 (111111100101013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53937426204 + ... + 53937428263.

It is an arithmetic number, because the mean of its divisors is an integer number (12621357972756).

Almost surely, 2^{111111100101010} is an apocalyptic number.

111111100101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111111100101010 is a deficient number, since it is larger than the sum of its proper divisors (90830627463086).

111111100101010 is a wasteful number, since it uses less digits than its factorization.

111111100101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107874854577.

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

Adding to 111111100101010 its reverse (10101001111111), we get a palindrome (121212101212121).

The spelling of 111111100101010 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred million, one hundred one thousand, ten".