21120321134 has 8 divisors (see below), whose sum is σ = 34560525528. Its totient is φ = 9600145960.

The previous prime is 21120321077. The next prime is 21120321149. The reversal of 21120321134 is 43112302112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480007277 + ... + 480007320.

It is an arithmetic number, because the mean of its divisors is an integer number (4320065691).

Almost surely, 2^21120321134 is an apocalyptic number.

21120321134 is a deficient number, since it is larger than the sum of its proper divisors (13440204394).

21120321134 is a wasteful number, since it uses less digits than its factorization.

21120321134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960014610.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21120321134 its reverse (43112302112), we get a palindrome (64232623246).

The spelling of 21120321134 in words is "twenty-one billion, one hundred twenty million, three hundred twenty-one thousand, one hundred thirty-four".