21111113332 has 48 divisors (see below), whose sum is σ = 42134178240. Its totient is φ = 9192863232.

The previous prime is 21111113327. The next prime is 21111113363. The reversal of 21111113332 is 23331111112.

It is a super-2 number, since 2×21111113332² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134443 + ... + 245554.

It is an arithmetic number, because the mean of its divisors is an integer number (877795380).

Almost surely, 2^21111113332 is an apocalyptic number.

It is an amenable number.

21111113332 is a deficient number, since it is larger than the sum of its proper divisors (21023064908).

21111113332 is a wasteful number, since it uses less digits than its factorization.

21111113332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380080 (or 380078 counting only the distinct ones).

The product of its digits is 108, while the sum is 19.

Adding to 21111113332 its reverse (23331111112), we get a palindrome (44442224444).

The spelling of 21111113332 in words is "twenty-one billion, one hundred eleven million, one hundred thirteen thousand, three hundred thirty-two".