21134221242134 has 128 divisors (see below), whose sum is σ = 42812783290368. Its totient is φ = 7556399170560.

The previous prime is 21134221242089. The next prime is 21134221242151. The reversal of 21134221242134 is 43124212243112.

It is a super-3 number, since 3×21134221242134³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 21134221242134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 304567607 + ... + 304636989.

It is an arithmetic number, because the mean of its divisors is an integer number (334474869456).

Almost surely, 2^{21134221242134} is an apocalyptic number.

21134221242134 is an abundant number, since it is smaller than the sum of its proper divisors (21678562048234).

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

21134221242134 is a wasteful number, since it uses less digits than its factorization.

21134221242134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70302.

The product of its digits is 18432, while the sum is 32.

Adding to 21134221242134 its reverse (43124212243112), we get a palindrome (64258433485246).

The spelling of 21134221242134 in words is "twenty-one trillion, one hundred thirty-four billion, two hundred twenty-one million, two hundred forty-two thousand, one hundred thirty-four".