21442044210 has 32 divisors (see below), whose sum is σ = 51788693952. Its totient is φ = 5681457600.

The previous prime is 21442044203. The next prime is 21442044251. The reversal of 21442044210 is 1244024412.

It is a super-2 number, since 2×21442044210² (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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2271516 + ... + 2280935.

It is an arithmetic number, because the mean of its divisors is an integer number (1618396686).

Almost surely, 2^21442044210 is an apocalyptic number.

21442044210 is an abundant number, since it is smaller than the sum of its proper divisors (30346649742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21442044210 is a wasteful number, since it uses less digits than its factorization.

21442044210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4552618.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 21442044210 its reverse (1244024412), we get a palindrome (22686068622).

The spelling of 21442044210 in words is "twenty-one billion, four hundred forty-two million, forty-four thousand, two hundred ten".