21233134134 has 24 divisors (see below), whose sum is σ = 46035873000. Its totient is φ = 7072980768.

The previous prime is 21233134061. The next prime is 21233134183. The reversal of 21233134134 is 43143133212.

It is a happy number.

21233134134 is a `hidden beast` number, since 2 + 1 + 233 + 13 + 413 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21233134098 and 21233134107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366487 + ... + 420450.

It is an arithmetic number, because the mean of its divisors is an integer number (1918161375).

Almost surely, 2^21233134134 is an apocalyptic number.

21233134134 is an abundant number, since it is smaller than the sum of its proper divisors (24802738866).

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

21233134134 is a wasteful number, since it uses less digits than its factorization.

21233134134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788444 (or 788441 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 21233134134 its reverse (43143133212), we get a palindrome (64376267346).

The spelling of 21233134134 in words is "twenty-one billion, two hundred thirty-three million, one hundred thirty-four thousand, one hundred thirty-four".