21143024410 has 8 divisors (see below), whose sum is σ = 38057443956. Its totient is φ = 8457209760.

The previous prime is 21143024393. The next prime is 21143024411. The reversal of 21143024410 is 1442034112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21082168809 + 60855601 = 145197^2 + 7801^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21143024411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057151211 + ... + 1057151230.

Almost surely, 2^21143024410 is an apocalyptic number.

21143024410 is a deficient number, since it is larger than the sum of its proper divisors (16914419546).

21143024410 is a wasteful number, since it uses less digits than its factorization.

21143024410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114302448.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21143024410 its reverse (1442034112), we get a palindrome (22585058522).

The spelling of 21143024410 in words is "twenty-one billion, one hundred forty-three million, twenty-four thousand, four hundred ten".