21100343332 has 24 divisors (see below), whose sum is σ = 37397096352. Its totient is φ = 10415640000.

The previous prime is 21100343281. The next prime is 21100343351. The reversal of 21100343332 is 23334300112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459832 + ... + 503632.

It is an arithmetic number, because the mean of its divisors is an integer number (1558212348).

Almost surely, 2^21100343332 is an apocalyptic number.

It is an amenable number.

21100343332 is a deficient number, since it is larger than the sum of its proper divisors (16296753020).

21100343332 is a wasteful number, since it uses less digits than its factorization.

21100343332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45339 (or 45337 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21100343332 its reverse (23334300112), we get a palindrome (44434643444).

The spelling of 21100343332 in words is "twenty-one billion, one hundred million, three hundred forty-three thousand, three hundred thirty-two".