11221002112121 has 4 divisors (see below), whose sum is σ = 11221093914612. Its totient is φ = 11220910309632.

The previous prime is 11221002112109. The next prime is 11221002112129. The reversal of 11221002112121 is 12121120012211.

11221002112121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2717881960000 + 8503120152121 = 1648600^2 + 2916011^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221002112121 - 2²² = 11220997917817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11221002112121.

It is not an unprimeable number, because it can be changed into a prime (11221002112129) 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, 45717656 + ... + 45962441.

It is an arithmetic number, because the mean of its divisors is an integer number (2805273478653).

Almost surely, 2^{11221002112121} is an apocalyptic number.

It is an amenable number.

11221002112121 is a deficient number, since it is larger than the sum of its proper divisors (91802491).

11221002112121 is an equidigital number, since it uses as much as digits as its factorization.

11221002112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91802490.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11221002112121 its reverse (12121120012211), we get a palindrome (23342122124332).

The spelling of 11221002112121 in words is "eleven trillion, two hundred twenty-one billion, two million, one hundred twelve thousand, one hundred twenty-one".