1001111111010 has 48 divisors (see below), whose sum is σ = 2603089505016. Its totient is φ = 266942386944.

The previous prime is 1001111110981. The next prime is 1001111111029. The reversal of 1001111111010 is 101111111001.

It can be written as a sum of positive squares in 4 ways, for example, as 876899272041 + 124211838969 = 936429^2 + 352437^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1001111110983 and 1001111111001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 763852 + ... + 1608008.

Almost surely, 2^{1001111111010} is an apocalyptic number.

1001111111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001111111010 is an abundant number, since it is smaller than the sum of its proper divisors (1601978394006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001111111010 is a wasteful number, since it uses less digits than its factorization.

1001111111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857347 (or 857344 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 1001111111010 its reverse (101111111001), we get a palindrome (1102222222011).

Subtracting from 1001111111010 its reverse (101111111001), we obtain a palindrome (900000000009).

It can be divided in two parts, 100111 and 1111010, that added together give a palindrome (1211121).

The spelling of 1001111111010 in words is "one trillion, one billion, one hundred eleven million, one hundred eleven thousand, ten".