11123302921 has 2 divisors, whose sum is σ = 11123302922. Its totient is φ = 11123302920.

The previous prime is 11123302919. The next prime is 11123302951. The reversal of 11123302921 is 12920332111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8655697296 + 2467605625 = 93036^2 + 49675^2 .

It is an emirp because it is prime and its reverse (12920332111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11123302921 - 2¹ = 11123302919 is a prime.

Together with 11123302919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11123302951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561651460 + 5561651461.

It is an arithmetic number, because the mean of its divisors is an integer number (5561651461).

Almost surely, 2^11123302921 is an apocalyptic number.

It is an amenable number.

11123302921 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123302921 is an equidigital number, since it uses as much as digits as its factorization.

11123302921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

It can be divided in two parts, 1112 and 3302921, that added together give a palindrome (3304033).

The spelling of 11123302921 in words is "eleven billion, one hundred twenty-three million, three hundred two thousand, nine hundred twenty-one".