11001850721 has 2 divisors, whose sum is σ = 11001850722. Its totient is φ = 11001850720.

The previous prime is 11001850697. The next prime is 11001850723. The reversal of 11001850721 is 12705810011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8374263121 + 2627587600 = 91511^2 + 51260^2 .

It is an emirp because it is prime and its reverse (12705810011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11001850721 - 2¹⁰ = 11001849697 is a prime.

Together with 11001850723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11001850723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500925360 + 5500925361.

It is an arithmetic number, because the mean of its divisors is an integer number (5500925361).

Almost surely, 2^11001850721 is an apocalyptic number.

It is an amenable number.

11001850721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001850721 is an equidigital number, since it uses as much as digits as its factorization.

11001850721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 26.

The spelling of 11001850721 in words is "eleven billion, one million, eight hundred fifty thousand, seven hundred twenty-one".