21200134334 has 8 divisors (see below), whose sum is σ = 31975893768. Its totient is φ = 10541503080.

The previous prime is 21200134321. The next prime is 21200134339. The reversal of 21200134334 is 43343100212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200134339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29281592 + ... + 29282315.

It is an arithmetic number, because the mean of its divisors is an integer number (3996986721).

Almost surely, 2^21200134334 is an apocalyptic number.

21200134334 is a deficient number, since it is larger than the sum of its proper divisors (10775759434).

21200134334 is a wasteful number, since it uses less digits than its factorization.

21200134334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58564090.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21200134334 its reverse (43343100212), we get a palindrome (64543234546).

The spelling of 21200134334 in words is "twenty-one billion, two hundred million, one hundred thirty-four thousand, three hundred thirty-four".