11112121001011 has 4 divisors (see below), whose sum is σ = 11112422923800. Its totient is φ = 11111819078224.

The previous prime is 11112121000997. The next prime is 11112121001029. The reversal of 11112121001011 is 11010012121111.

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 11112121001011 - 2⁵ = 11112121000979 is a prime.

It is a super-2 number, since 2×11112121001011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112121000982 and 11112121001000.

It is not an unprimeable number, because it can be changed into a prime (11112121002011) 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, 150906181 + ... + 150979798.

It is an arithmetic number, because the mean of its divisors is an integer number (2778105730950).

Almost surely, 2^{11112121001011} is an apocalyptic number.

11112121001011 is a deficient number, since it is larger than the sum of its proper divisors (301922789).

11112121001011 is an equidigital number, since it uses as much as digits as its factorization.

11112121001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301922788.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11112121001011 its reverse (11010012121111), we get a palindrome (22122133122122).

The spelling of 11112121001011 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-one million, one thousand, eleven".