11203421329 has 2 divisors, whose sum is σ = 11203421330. Its totient is φ = 11203421328.

The previous prime is 11203421239. The next prime is 11203421389. The reversal of 11203421329 is 92312430211.

It is a happy number.

Together with previous prime (11203421239) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6933060225 + 4270361104 = 83265^2 + 65348^2 .

It is an emirp because it is prime and its reverse (92312430211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11203421329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11203421297 and 11203421306.

It is not a weakly prime, because it can be changed into another prime (11203421389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601710664 + 5601710665.

It is an arithmetic number, because the mean of its divisors is an integer number (5601710665).

Almost surely, 2^11203421329 is an apocalyptic number.

It is an amenable number.

11203421329 is a deficient number, since it is larger than the sum of its proper divisors (1).

11203421329 is an equidigital number, since it uses as much as digits as its factorization.

11203421329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 11203421329 in words is "eleven billion, two hundred three million, four hundred twenty-one thousand, three hundred twenty-nine".