21140443010 has 8 divisors (see below), whose sum is σ = 38052797436. Its totient is φ = 8456177200.

The previous prime is 21140442991. The next prime is 21140443021. The reversal of 21140443010 is 1034404112.

It can be written as a sum of positive squares in 2 ways, for example, as 20020269049 + 1120173961 = 141493^2 + 33469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057022141 + ... + 1057022160.

Almost surely, 2^21140443010 is an apocalyptic number.

21140443010 is a deficient number, since it is larger than the sum of its proper divisors (16912354426).

21140443010 is a wasteful number, since it uses less digits than its factorization.

21140443010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114044308.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21140443010 its reverse (1034404112), we get a palindrome (22174847122).

The spelling of 21140443010 in words is "twenty-one billion, one hundred forty million, four hundred forty-three thousand, ten".