11673153221 has 2 divisors, whose sum is σ = 11673153222. Its totient is φ = 11673153220.

The previous prime is 11673153209. The next prime is 11673153251. The reversal of 11673153221 is 12235137611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11515650721 + 157502500 = 107311^2 + 12550^2 .

It is an emirp because it is prime and its reverse (12235137611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11673153221 is a prime.

It is a super-2 number, since 2×11673153221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11673153251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5836576610 + 5836576611.

It is an arithmetic number, because the mean of its divisors is an integer number (5836576611).

Almost surely, 2^11673153221 is an apocalyptic number.

It is an amenable number.

11673153221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11673153221 is an equidigital number, since it uses as much as digits as its factorization.

11673153221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The spelling of 11673153221 in words is "eleven billion, six hundred seventy-three million, one hundred fifty-three thousand, two hundred twenty-one".