11222210121 has 16 divisors (see below), whose sum is σ = 15068519424. Its totient is φ = 7428782864.

The previous prime is 11222210113. The next prime is 11222210143. The reversal of 11222210121 is 12101222211.

11222210121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11222210121 - 2³ = 11222210113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11222210121.

It is not an unprimeable number, because it can be changed into a prime (11222217121) 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 15 ways as a sum of consecutive naturals, for example, 481090 + ... + 503876.

It is an arithmetic number, because the mean of its divisors is an integer number (941782464).

Almost surely, 2^11222210121 is an apocalyptic number.

It is an amenable number.

11222210121 is a deficient number, since it is larger than the sum of its proper divisors (3846309303).

11222210121 is a wasteful number, since it uses less digits than its factorization.

11222210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23940.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11222210121 its reverse (12101222211), we get a palindrome (23323432332).

The spelling of 11222210121 in words is "eleven billion, two hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".