11222621 has 2 divisors, whose sum is σ = 11222622. Its totient is φ = 11222620.

The previous prime is 11222599. The next prime is 11222671. The reversal of 11222621 is 12622211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11222500 + 121 = 3350^2 + 11^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222621 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11222621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11222671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611310 + 5611311.

It is an arithmetic number, because the mean of its divisors is an integer number (5611311).

Almost surely, 2^11222621 is an apocalyptic number.

It is an amenable number.

11222621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222621 is an equidigital number, since it uses as much as digits as its factorization.

11222621 is an odious number, because the sum of its binary digits is odd.

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

The square root of 11222621 is about 3350.0180596528. The cubic root of 11222621 is about 223.8883172534. Note that the first 3 decimals are identical.

Adding to 11222621 its reverse (12622211), we get a palindrome (23844832).

The spelling of 11222621 in words is "eleven million, two hundred twenty-two thousand, six hundred twenty-one".