21101113132 has 12 divisors (see below), whose sum is σ = 40283943336. Its totient is φ = 9591415040.

The previous prime is 21101113127. The next prime is 21101113199. The reversal of 21101113132 is 23131110112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239785333 + ... + 239785420.

It is an arithmetic number, because the mean of its divisors is an integer number (3356995278).

Almost surely, 2^21101113132 is an apocalyptic number.

21101113132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21101113132 is a deficient number, since it is larger than the sum of its proper divisors (19182830204).

21101113132 is a wasteful number, since it uses less digits than its factorization.

21101113132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479570768 (or 479570766 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21101113132 its reverse (23131110112), we get a palindrome (44232223244).

The spelling of 21101113132 in words is "twenty-one billion, one hundred one million, one hundred thirteen thousand, one hundred thirty-two".