21232043410 has 16 divisors (see below), whose sum is σ = 40465777176. Its totient is φ = 7993239808.

The previous prime is 21232043363. The next prime is 21232043419. The reversal of 21232043410 is 1434023212.

It can be written as a sum of positive squares in 4 ways, for example, as 13277722441 + 7954320969 = 115229^2 + 89187^2 .

It is not an unprimeable number, because it can be changed into a prime (21232043419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62447017 + ... + 62447356.

Almost surely, 2^21232043410 is an apocalyptic number.

21232043410 is a deficient number, since it is larger than the sum of its proper divisors (19233733766).

21232043410 is a wasteful number, since it uses less digits than its factorization.

21232043410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124894397.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21232043410 its reverse (1434023212), we get a palindrome (22666066622).

The spelling of 21232043410 in words is "twenty-one billion, two hundred thirty-two million, forty-three thousand, four hundred ten".