21133244410 has 8 divisors (see below), whose sum is σ = 38039839956. Its totient is φ = 8453297760.

The previous prime is 21133244393. The next prime is 21133244471. The reversal of 21133244410 is 1444233112.

It can be written as a sum of positive squares in 2 ways, for example, as 19799022681 + 1334221729 = 140709^2 + 36527^2 .

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

It is a super-2 number, since 2×21133244410² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056662211 + ... + 1056662230.

Almost surely, 2^21133244410 is an apocalyptic number.

21133244410 is a deficient number, since it is larger than the sum of its proper divisors (16906595546).

21133244410 is a wasteful number, since it uses less digits than its factorization.

21133244410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113324448.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21133244410 its reverse (1444233112), we get a palindrome (22577477522).

The spelling of 21133244410 in words is "twenty-one billion, one hundred thirty-three million, two hundred forty-four thousand, four hundred ten".