21132042010 has 16 divisors (see below), whose sum is σ = 38039428296. Its totient is φ = 8452427328.

The previous prime is 21132041999. The next prime is 21132042023. The reversal of 21132042010 is 1024023112.

It can be written as a sum of positive squares in 4 ways, for example, as 13539882321 + 7592159689 = 116361^2 + 87133^2 .

It is an unprimeable number.

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, 294172 + ... + 358888.

Almost surely, 2^21132042010 is an apocalyptic number.

21132042010 is a deficient number, since it is larger than the sum of its proper divisors (16907386286).

21132042010 is a wasteful number, since it uses less digits than its factorization.

21132042010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97377.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21132042010 its reverse (1024023112), we get a palindrome (22156065122).

The spelling of 21132042010 in words is "twenty-one billion, one hundred thirty-two million, forty-two thousand, ten".