21011101132 has 48 divisors (see below), whose sum is σ = 44731008000. Its totient is φ = 8434952064.

The previous prime is 21011101127. The next prime is 21011101171. The reversal of 21011101132 is 23110111012.

It is a happy 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, 174532 + ... + 269227.

It is an arithmetic number, because the mean of its divisors is an integer number (931896000).

Almost surely, 2^21011101132 is an apocalyptic number.

It is an amenable number.

21011101132 is an abundant number, since it is smaller than the sum of its proper divisors (23719906868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21011101132 is a wasteful number, since it uses less digits than its factorization.

21011101132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443878 (or 443876 counting only the distinct ones).

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

Adding to 21011101132 its reverse (23110111012), we get a palindrome (44121212144).

The spelling of 21011101132 in words is "twenty-one billion, eleven million, one hundred one thousand, one hundred thirty-two".