11322212021 has 4 divisors (see below), whose sum is σ = 11327164992. Its totient is φ = 11317259052.

The previous prime is 11322211993. The next prime is 11322212029. The reversal of 11322212021 is 12021222311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12021222311 = 7 ⋅1717317473.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11322212021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11322212029) 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, 2473055 + ... + 2477628.

It is an arithmetic number, because the mean of its divisors is an integer number (2831791248).

Almost surely, 2^11322212021 is an apocalyptic number.

It is an amenable number.

11322212021 is a deficient number, since it is larger than the sum of its proper divisors (4952971).

11322212021 is an equidigital number, since it uses as much as digits as its factorization.

11322212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4952970.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11322212021 its reverse (12021222311), we get a palindrome (23343434332).

The spelling of 11322212021 in words is "eleven billion, three hundred twenty-two million, two hundred twelve thousand, twenty-one".