11200312421 has 2 divisors, whose sum is σ = 11200312422. Its totient is φ = 11200312420.

The previous prime is 11200312379. The next prime is 11200312433. The reversal of 11200312421 is 12421300211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10125390625 + 1074921796 = 100625^2 + 32786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11200312421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11200312421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11200312441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600156210 + 5600156211.

It is an arithmetic number, because the mean of its divisors is an integer number (5600156211).

Almost surely, 2^11200312421 is an apocalyptic number.

It is an amenable number.

11200312421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200312421 is an equidigital number, since it uses as much as digits as its factorization.

11200312421 is an evil number, because the sum of its binary digits is even.

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

Adding to 11200312421 its reverse (12421300211), we get a palindrome (23621612632).

The spelling of 11200312421 in words is "eleven billion, two hundred million, three hundred twelve thousand, four hundred twenty-one".