11122011001001 has 4 divisors (see below), whose sum is σ = 11122062699012. Its totient is φ = 11121959302992.

The previous prime is 11122011000953. The next prime is 11122011001043. The reversal of 11122011001001 is 10010011022111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3403065667600 + 7718945333401 = 1844740^2 + 2778299^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122011001001 - 2¹⁰ = 11122010999977 is a prime.

It is a super-3 number, since 3×11122011001001³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11122011001901) 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, 25524950 + ... + 25957023.

It is an arithmetic number, because the mean of its divisors is an integer number (2780515674753).

Almost surely, 2^{11122011001001} is an apocalyptic number.

It is an amenable number.

11122011001001 is a deficient number, since it is larger than the sum of its proper divisors (51698011).

11122011001001 is an equidigital number, since it uses as much as digits as its factorization.

11122011001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51698010.

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

Adding to 11122011001001 its reverse (10010011022111), we get a palindrome (21132022023112).

The spelling of 11122011001001 in words is "eleven trillion, one hundred twenty-two billion, eleven million, one thousand, one".