1220010011011 has 4 divisors (see below), whose sum is σ = 1330920012024. Its totient is φ = 1109100010000.

The previous prime is 1220010010993. The next prime is 1220010011071. The reversal of 1220010011011 is 1101100100221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220010011011 - 2¹¹ = 1220010008963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220010011071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55455000490 + ... + 55455000511.

It is an arithmetic number, because the mean of its divisors is an integer number (332730003006).

Almost surely, 2^{1220010011011} is an apocalyptic number.

1220010011011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220010011011 is a deficient number, since it is larger than the sum of its proper divisors (110910001013).

1220010011011 is a wasteful number, since it uses less digits than its factorization.

1220010011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110910001012.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1220010011011 its reverse (1101100100221), we get a palindrome (2321110111232).

The spelling of 1220010011011 in words is "one trillion, two hundred twenty billion, ten million, eleven thousand, eleven".