11200212421 has 2 divisors, whose sum is σ = 11200212422. Its totient is φ = 11200212420.

The previous prime is 11200212349. The next prime is 11200212427. The reversal of 11200212421 is 12421200211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11195756100 + 4456321 = 105810^2 + 2111^2 .

It is a cyclic number.

It is not a de Polignac number, because 11200212421 - 2¹⁷ = 11200081349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11200212395 and 11200212404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11200212427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600106210 + 5600106211.

It is an arithmetic number, because the mean of its divisors is an integer number (5600106211).

Almost surely, 2^11200212421 is an apocalyptic number.

It is an amenable number.

11200212421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200212421 is an equidigital number, since it uses as much as digits as its factorization.

11200212421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11200212421 its reverse (12421200211), we get a palindrome (23621412632).

The spelling of 11200212421 in words is "eleven billion, two hundred million, two hundred twelve thousand, four hundred twenty-one".