211321111093 has 8 divisors (see below), whose sum is σ = 214636815000. Its totient is φ = 208016782848.

The previous prime is 211321111061. The next prime is 211321111109. The reversal of 211321111093 is 390111123112.

It can be written as a sum of positive squares in 4 ways, for example, as 118062334404 + 93258776689 = 343602^2 + 305383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211321111093 - 2⁵ = 211321111061 is a prime.

It is a super-2 number, since 2×211321111093² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211321111993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2806468 + ... + 2880781.

It is an arithmetic number, because the mean of its divisors is an integer number (26829601875).

Almost surely, 2^211321111093 is an apocalyptic number.

It is an amenable number.

211321111093 is a deficient number, since it is larger than the sum of its proper divisors (3315703907).

211321111093 is an equidigital number, since it uses as much as digits as its factorization.

211321111093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5687831.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 211321111093 in words is "two hundred eleven billion, three hundred twenty-one million, one hundred eleven thousand, ninety-three".