20111093 has 2 divisors, whose sum is σ = 20111094. Its totient is φ = 20111092.

The previous prime is 20111087. The next prime is 20111137. The reversal of 20111093 is 39011102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11242609 + 8868484 = 3353^2 + 2978^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111093 - 2⁸ = 20110837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055546 + 10055547.

It is an arithmetic number, because the mean of its divisors is an integer number (10055547).

Almost surely, 2^20111093 is an apocalyptic number.

It is an amenable number.

20111093 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111093 is an equidigital number, since it uses as much as digits as its factorization.

20111093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 20111093 is about 4484.5393297417. The cubic root of 20111093 is about 271.9434219476.

Adding to 20111093 its reverse (39011102), we get a palindrome (59122195).

The spelling of 20111093 in words is "twenty million, one hundred eleven thousand, ninety-three".