11011002222121 has 4 divisors (see below), whose sum is σ = 12012002424144. Its totient is φ = 10010002020100.

The previous prime is 11011002222107. The next prime is 11011002222137. The reversal of 11011002222121 is 12122220011011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11011002222121 - 2³⁷ = 10873563268649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011002222095 and 11011002222104.

It is not an unprimeable number, because it can be changed into a prime (11011002222721) 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, 500500100995 + ... + 500500101016.

It is an arithmetic number, because the mean of its divisors is an integer number (3003000606036).

Almost surely, 2^{11011002222121} is an apocalyptic number.

11011002222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11011002222121 is a deficient number, since it is larger than the sum of its proper divisors (1001000202023).

11011002222121 is a wasteful number, since it uses less digits than its factorization.

11011002222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001000202022.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11011002222121 its reverse (12122220011011), we get a palindrome (23133222233132).

The spelling of 11011002222121 in words is "eleven trillion, eleven billion, two million, two hundred twenty-two thousand, one hundred twenty-one".