11230345421 has 2 divisors, whose sum is σ = 11230345422. Its totient is φ = 11230345420.

The previous prime is 11230345411. The next prime is 11230345457. The reversal of 11230345421 is 12454303211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9724129321 + 1506216100 = 98611^2 + 38810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11230345421 is a prime.

It is a super-2 number, since 2×11230345421² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11230345411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615172710 + 5615172711.

It is an arithmetic number, because the mean of its divisors is an integer number (5615172711).

Almost surely, 2^11230345421 is an apocalyptic number.

It is an amenable number.

11230345421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11230345421 is an equidigital number, since it uses as much as digits as its factorization.

11230345421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 11230345421 its reverse (12454303211), we get a palindrome (23684648632).

The spelling of 11230345421 in words is "eleven billion, two hundred thirty million, three hundred forty-five thousand, four hundred twenty-one".