21033100134 has 12 divisors (see below), whose sum is σ = 45571716996. Its totient is φ = 7011033372.

The previous prime is 21033100093. The next prime is 21033100159. The reversal of 21033100134 is 43100133012.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1168505563 = 21033100134 / (2 + 1 + 0 + 3 + 3 + 1 + 0 + 0 + 1 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 584252764 + ... + 584252799.

It is an arithmetic number, because the mean of its divisors is an integer number (3797643083).

Almost surely, 2^21033100134 is an apocalyptic number.

21033100134 is an abundant number, since it is smaller than the sum of its proper divisors (24538616862).

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

21033100134 is a wasteful number, since it uses less digits than its factorization.

21033100134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168505571 (or 1168505568 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21033100134 its reverse (43100133012), we get a palindrome (64133233146).

The spelling of 21033100134 in words is "twenty-one billion, thirty-three million, one hundred thousand, one hundred thirty-four".