21233231313111 has 6 divisors (see below), whose sum is σ = 30670223007840. Its totient is φ = 14155487542068.

The previous prime is 21233231313043. The next prime is 21233231313137. The reversal of 21233231313111 is 11131313233212.

21233231313111 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 3 + 231 + 313 + 111 = 666.

It is not a de Polignac number, because 21233231313111 - 2¹³ = 21233231304919 is a prime.

It is a super-2 number, since 2×21233231313111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233231318111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1179623961831 + ... + 1179623961848.

It is an arithmetic number, because the mean of its divisors is an integer number (5111703834640).

Almost surely, 2^{21233231313111} is an apocalyptic number.

21233231313111 is a deficient number, since it is larger than the sum of its proper divisors (9436991694729).

21233231313111 is a wasteful number, since it uses less digits than its factorization.

21233231313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359247923685 (or 2359247923682 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

Adding to 21233231313111 its reverse (11131313233212), we get a palindrome (32364544546323).

The spelling of 21233231313111 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred thirty-one million, three hundred thirteen thousand, one hundred eleven".