11222022021121 has 4 divisors (see below), whose sum is σ = 11324976351700. Its totient is φ = 11119067690544.

The previous prime is 11222022021103. The next prime is 11222022021127. The reversal of 11222022021121 is 12112022022211.

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 8984496682225 + 2237525338896 = 2997415^2 + 1495836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222022021121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222022021127) 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, 51477165126 + ... + 51477165343.

It is an arithmetic number, because the mean of its divisors is an integer number (2831244087925).

Almost surely, 2^{11222022021121} is an apocalyptic number.

It is an amenable number.

11222022021121 is a deficient number, since it is larger than the sum of its proper divisors (102954330579).

11222022021121 is a wasteful number, since it uses less digits than its factorization.

11222022021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102954330578.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11222022021121 its reverse (12112022022211), we get a palindrome (23334044043332).

The spelling of 11222022021121 in words is "eleven trillion, two hundred twenty-two billion, twenty-two million, twenty-one thousand, one hundred twenty-one".