21234175334 has 4 divisors (see below), whose sum is σ = 31851263004. Its totient is φ = 10617087666.

The previous prime is 21234175331. The next prime is 21234175349. The reversal of 21234175334 is 43357143212.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21234175294 and 21234175303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234175331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5308543832 + ... + 5308543835.

It is an arithmetic number, because the mean of its divisors is an integer number (7962815751).

Almost surely, 2^21234175334 is an apocalyptic number.

21234175334 is a deficient number, since it is larger than the sum of its proper divisors (10617087670).

21234175334 is a wasteful number, since it uses less digits than its factorization.

21234175334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10617087669.

The product of its digits is 60480, while the sum is 35.

The spelling of 21234175334 in words is "twenty-one billion, two hundred thirty-four million, one hundred seventy-five thousand, three hundred thirty-four".