1111111101010 has 48 divisors (see below), whose sum is σ = 2145603339720. Its totient is φ = 414158950400.

The previous prime is 1111111100963. The next prime is 1111111101019. The reversal of 1111111101010 is 101011111111.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 718580031481 + 392531069529 = 847691^2 + 626523^2 .

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 (1111111101019) 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, 1611415 + ... + 2195194.

Almost surely, 2^{1111111101010} is an apocalyptic number.

1111111101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111111101010 is a deficient number, since it is larger than the sum of its proper divisors (1034492238710).

1111111101010 is a wasteful number, since it uses less digits than its factorization.

1111111101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806751 (or 3806734 counting only the distinct ones).

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

Adding to 1111111101010 its reverse (101011111111), we get a palindrome (1212122212121).

It can be divided in two parts, 1111111 and 101010, that added together give a palindrome (1212121).

The spelling of 1111111101010 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred one thousand, ten".