21132434334 has 32 divisors (see below), whose sum is σ = 48533823360. Its totient is φ = 6066727200.

The previous prime is 21132434329. The next prime is 21132434359. The reversal of 21132434334 is 43343423112.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8424757 + ... + 8427264.

It is an arithmetic number, because the mean of its divisors is an integer number (1516681980).

Almost surely, 2^21132434334 is an apocalyptic number.

21132434334 is an abundant number, since it is smaller than the sum of its proper divisors (27401389026).

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

21132434334 is a wasteful number, since it uses less digits than its factorization.

21132434334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16852056.

The product of its digits is 20736, while the sum is 30.

Adding to 21132434334 its reverse (43343423112), we get a palindrome (64475857446).

The spelling of 21132434334 in words is "twenty-one billion, one hundred thirty-two million, four hundred thirty-four thousand, three hundred thirty-four".