21144334442310 has 48 divisors (see below), whose sum is σ = 57868704794160. Its totient is φ = 5341726595520.

The previous prime is 21144334442279. The next prime is 21144334442311. The reversal of 21144334442310 is 1324443344112.

21144334442310 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 4 + 334 + 4 + 4 + 2 + 310 = 666.

It is a super-2 number, since 2×21144334442310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21144334442311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6182552221 + ... + 6182555640.

It is an arithmetic number, because the mean of its divisors is an integer number (1205598016545).

Almost surely, 2^{21144334442310} is an apocalyptic number.

21144334442310 is an abundant number, since it is smaller than the sum of its proper divisors (36724370351850).

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

21144334442310 is a wasteful number, since it uses less digits than its factorization.

21144334442310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12365107893 (or 12365107890 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 21144334442310 its reverse (1324443344112), we get a palindrome (22468777786422).

The spelling of 21144334442310 in words is "twenty-one trillion, one hundred forty-four billion, three hundred thirty-four million, four hundred forty-two thousand, three hundred ten".