13234034021 has 4 divisors (see below), whose sum is σ = 14252036652. Its totient is φ = 12216031392.

The previous prime is 13234033991. The next prime is 13234034039. The reversal of 13234034021 is 12043043231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12043043231 = 3313 ⋅3635087.

It can be written as a sum of positive squares in 2 ways, for example, as 1937320225 + 11296713796 = 44015^2 + 106286^2 .

It is a cyclic number.

It is not a de Polignac number, because 13234034021 - 2¹⁴ = 13234017637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13234034221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509001296 + ... + 509001321.

It is an arithmetic number, because the mean of its divisors is an integer number (3563009163).

Almost surely, 2^13234034021 is an apocalyptic number.

It is an amenable number.

13234034021 is a deficient number, since it is larger than the sum of its proper divisors (1018002631).

13234034021 is a wasteful number, since it uses less digits than its factorization.

13234034021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018002630.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 13234034021 its reverse (12043043231), we get a palindrome (25277077252).

The spelling of 13234034021 in words is "thirteen billion, two hundred thirty-four million, thirty-four thousand, twenty-one".