21434233010 has 16 divisors (see below), whose sum is σ = 38592530136. Its totient is φ = 8571268608.

The previous prime is 21434232997. The next prime is 21434233027. The reversal of 21434233010 is 1033243412.

It can be written as a sum of positive squares in 4 ways, for example, as 17694054361 + 3740178649 = 133019^2 + 61157^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265727 + ... + 336866.

Almost surely, 2^21434233010 is an apocalyptic number.

21434233010 is a deficient number, since it is larger than the sum of its proper divisors (17158297126).

21434233010 is a wasteful number, since it uses less digits than its factorization.

21434233010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606157.

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

Adding to 21434233010 its reverse (1033243412), we get a palindrome (22467476422).

The spelling of 21434233010 in words is "twenty-one billion, four hundred thirty-four million, two hundred thirty-three thousand, ten".