11222202212021 has 4 divisors (see below), whose sum is σ = 11223507583212. Its totient is φ = 11220896840832.

The previous prime is 11222202211949. The next prime is 11222202212077. The reversal of 11222202212021 is 12021220222211.

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 5120739039025 + 6101463172996 = 2262905^2 + 2470114^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222202212021 - 2³⁸ = 10947324305077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11222202211984 and 11222202212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222202212821) 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, 652672700 + ... + 652689893.

It is an arithmetic number, because the mean of its divisors is an integer number (2805876895803).

Almost surely, 2^{11222202212021} is an apocalyptic number.

It is an amenable number.

11222202212021 is a deficient number, since it is larger than the sum of its proper divisors (1305371191).

11222202212021 is an equidigital number, since it uses as much as digits as its factorization.

11222202212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305371190.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11222202212021 its reverse (12021220222211), we get a palindrome (23243422434232).

The spelling of 11222202212021 in words is "eleven trillion, two hundred twenty-two billion, two hundred two million, two hundred twelve thousand, twenty-one".