21001101122132 has 48 divisors (see below), whose sum is σ = 37010956752000. Its totient is φ = 10426766423040.

The previous prime is 21001101122101. The next prime is 21001101122159. The reversal of 21001101122132 is 23122110110012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21001101122132.

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, 2081166407 + ... + 2081176497.

It is an arithmetic number, because the mean of its divisors is an integer number (771061599000).

Almost surely, 2^{21001101122132} is an apocalyptic number.

It is an amenable number.

21001101122132 is a deficient number, since it is larger than the sum of its proper divisors (16009855629868).

21001101122132 is a wasteful number, since it uses less digits than its factorization.

21001101122132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15296 (or 15294 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21001101122132 its reverse (23122110110012), we get a palindrome (44123211232144).

The spelling of 21001101122132 in words is "twenty-one trillion, one billion, one hundred one million, one hundred twenty-two thousand, one hundred thirty-two".