21111011032 has 8 divisors (see below), whose sum is σ = 39583145700. Its totient is φ = 10555505512.

The previous prime is 21111011029. The next prime is 21111011041. The reversal of 21111011032 is 23011011112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1319438182 + ... + 1319438197.

Almost surely, 2^21111011032 is an apocalyptic number.

It is an amenable number.

21111011032 is a deficient number, since it is larger than the sum of its proper divisors (18472134668).

21111011032 is a wasteful number, since it uses less digits than its factorization.

21111011032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638876385 (or 2638876381 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21111011032 its reverse (23011011112), we get a palindrome (44122022144).

The spelling of 21111011032 in words is "twenty-one billion, one hundred eleven million, eleven thousand, thirty-two".