1011201012011 has 4 divisors (see below), whose sum is σ = 1019163224832. Its totient is φ = 1003238799192.

The previous prime is 1011201011987. The next prime is 1011201012013. The reversal of 1011201012011 is 1102101021101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011201012011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011201011983 and 1011201012001.

It is not an unprimeable number, because it can be changed into a prime (1011201012013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3981106220 + ... + 3981106473.

It is an arithmetic number, because the mean of its divisors is an integer number (254790806208).

Almost surely, 2^{1011201012011} is an apocalyptic number.

1011201012011 is a deficient number, since it is larger than the sum of its proper divisors (7962212821).

1011201012011 is an equidigital number, since it uses as much as digits as its factorization.

1011201012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7962212820.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1011201012011 its reverse (1102101021101), we get a palindrome (2113302033112).

The spelling of 1011201012011 in words is "one trillion, eleven billion, two hundred one million, twelve thousand, eleven".