11222322021 has 6 divisors (see below), whose sum is σ = 16210020710. Its totient is φ = 7481548008.

The previous prime is 11222321993. The next prime is 11222322029. The reversal of 11222322021 is 12022322211.

It can be written as a sum of positive squares in only one way, i.e., 8540532225 + 2681789796 = 92415^2 + 51786^2 .

It is not a de Polignac number, because 11222322021 - 2¹⁰ = 11222320997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11222321985 and 11222322003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222322029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623462326 + ... + 623462343.

Almost surely, 2^11222322021 is an apocalyptic number.

It is an amenable number.

11222322021 is a deficient number, since it is larger than the sum of its proper divisors (4987698689).

11222322021 is a wasteful number, since it uses less digits than its factorization.

11222322021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246924675 (or 1246924672 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11222322021 its reverse (12022322211), we get a palindrome (23244644232).

The spelling of 11222322021 in words is "eleven billion, two hundred twenty-two million, three hundred twenty-two thousand, twenty-one".