21111443014311 has 48 divisors (see below), whose sum is σ = 33131886488064. Its totient is φ = 12876643006272.

The previous prime is 21111443014267. The next prime is 21111443014349. The reversal of 21111443014311 is 11341034411112.

21111443014311 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 1 + 44 + 301 + 4 + 311 = 666.

It is not a de Polignac number, because 21111443014311 - 2¹¹ = 21111443012263 is a prime.

It is a super-2 number, since 2×21111443014311² (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 (21111443014511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5223150 + ... + 8336916.

It is an arithmetic number, because the mean of its divisors is an integer number (690247635168).

Almost surely, 2^{21111443014311} is an apocalyptic number.

21111443014311 is a deficient number, since it is larger than the sum of its proper divisors (12020443473753).

21111443014311 is a wasteful number, since it uses less digits than its factorization.

21111443014311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114300 (or 3114297 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

Adding to 21111443014311 its reverse (11341034411112), we get a palindrome (32452477425423).

The spelling of 21111443014311 in words is "twenty-one trillion, one hundred eleven billion, four hundred forty-three million, fourteen thousand, three hundred eleven".