21234152273 has 8 divisors (see below), whose sum is σ = 21809467680. Its totient is φ = 20661570720.

The previous prime is 21234152249. The next prime is 21234152279. The reversal of 21234152273 is 37225143212.

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

It is a cyclic number.

It is not a de Polignac number, because 21234152273 - 2¹⁶ = 21234086737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21234152279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667715 + ... + 698792.

It is an arithmetic number, because the mean of its divisors is an integer number (2726183460).

Almost surely, 2^21234152273 is an apocalyptic number.

It is an amenable number.

21234152273 is a deficient number, since it is larger than the sum of its proper divisors (575315407).

21234152273 is a wasteful number, since it uses less digits than its factorization.

21234152273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366927.

The product of its digits is 20160, while the sum is 32.

Adding to 21234152273 its reverse (37225143212), we get a palindrome (58459295485).

The spelling of 21234152273 in words is "twenty-one billion, two hundred thirty-four million, one hundred fifty-two thousand, two hundred seventy-three".