21111110032 has 10 divisors (see below), whose sum is σ = 40902775718. Its totient is φ = 10555555008.

The previous prime is 21111110023. The next prime is 21111110063. The reversal of 21111110032 is 23001111112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11695124736 + 9415985296 = 108144^2 + 97036^2 .

It is a super-3 number, since 3×21111110032³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21111109994 and 21111110021.

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, 659722173 + ... + 659722204.

Almost surely, 2^21111110032 is an apocalyptic number.

It is an amenable number.

21111110032 is a deficient number, since it is larger than the sum of its proper divisors (19791665686).

21111110032 is a wasteful number, since it uses less digits than its factorization.

21111110032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319444385 (or 1319444379 counting only the distinct ones).

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

Adding to 21111110032 its reverse (23001111112), we get a palindrome (44112221144).

The spelling of 21111110032 in words is "twenty-one billion, one hundred eleven million, one hundred ten thousand, thirty-two".