21342122111310 has 256 divisors, whose sum is σ = 70069973944320. Its totient is φ = 4016355932160.

The previous prime is 21342122111309. The next prime is 21342122111399. The reversal of 21342122111310 is 1311122124312.

It is a super-2 number, since 2×21342122111310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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 127 ways as a sum of consecutive naturals, for example, 5113065 + ... + 8296244.

It is an arithmetic number, because the mean of its divisors is an integer number (273710835720).

Almost surely, 2^{21342122111310} is an apocalyptic number.

21342122111310 is an abundant number, since it is smaller than the sum of its proper divisors (48727851833010).

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

21342122111310 is a wasteful number, since it uses less digits than its factorization.

21342122111310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13409403.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 21342122111310 its reverse (1311122124312), we get a palindrome (22653244235622).

The spelling of 21342122111310 in words is "twenty-one trillion, three hundred forty-two billion, one hundred twenty-two million, one hundred eleven thousand, three hundred ten".