1011111211010 has 8 divisors (see below), whose sum is σ = 1820000179836. Its totient is φ = 404444484400.

The previous prime is 1011111210961. The next prime is 1011111211039. The reversal of 1011111211010 is 101121111101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1000518067081 + 10593143929 = 1000259^2 + 102923^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1011111210982 and 1011111211000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50555560541 + ... + 50555560560.

Almost surely, 2^{1011111211010} is an apocalyptic number.

1011111211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011111211010 is a deficient number, since it is larger than the sum of its proper divisors (808888968826).

1011111211010 is a wasteful number, since it uses less digits than its factorization.

1011111211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101111121108.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1011111211010 its reverse (101121111101), we get a palindrome (1112232322111).

Subtracting from 1011111211010 its reverse (101121111101), we obtain a palindrome (909990099909).

The spelling of 1011111211010 in words is "one trillion, eleven billion, one hundred eleven million, two hundred eleven thousand, ten".