1011111201011 has 8 divisors (see below), whose sum is σ = 1034995443504. Its totient is φ = 987243778080.

The previous prime is 1011111200971. The next prime is 1011111201047. The reversal of 1011111201011 is 1101021111101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1011111201011 - 2¹⁴ = 1011111184627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011111200983 and 1011111201001.

It is not an unprimeable number, because it can be changed into a prime (1011111201071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4083200 + ... + 4323741.

It is an arithmetic number, because the mean of its divisors is an integer number (129374430438).

Almost surely, 2^{1011111201011} is an apocalyptic number.

1011111201011 is a deficient number, since it is larger than the sum of its proper divisors (23884242493).

1011111201011 is an equidigital number, since it uses as much as digits as its factorization.

1011111201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8409781.

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

Adding to 1011111201011 its reverse (1101021111101), we get a palindrome (2112132312112).

The spelling of 1011111201011 in words is "one trillion, eleven billion, one hundred eleven million, two hundred one thousand, eleven".