21140022010 has 16 divisors (see below), whose sum is σ = 38329794216. Its totient is φ = 8394285568.

The previous prime is 21140021989. The next prime is 21140022011. The reversal of 21140022010 is 1022004112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19684370601 + 1455651409 = 140301^2 + 38153^2 .

It is not an unprimeable number, because it can be changed into a prime (21140022011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7713967 + ... + 7716706.

Almost surely, 2^21140022010 is an apocalyptic number.

21140022010 is a deficient number, since it is larger than the sum of its proper divisors (17189772206).

21140022010 is a wasteful number, since it uses less digits than its factorization.

21140022010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15430817.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21140022010 its reverse (1022004112), we get a palindrome (22162026122).

The spelling of 21140022010 in words is "twenty-one billion, one hundred forty million, twenty-two thousand, ten".