21312115010134 has 64 divisors (see below), whose sum is σ = 36627086502720. Its totient is φ = 9232173434880.

The previous prime is 21312115010089. The next prime is 21312115010149. The reversal of 21312115010134 is 43101051121312.

It is a junction number, because it is equal to n+sod(n) for n = 21312115010099 and 21312115010108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474717 + ... + 6545959.

It is an arithmetic number, because the mean of its divisors is an integer number (572298226605).

Almost surely, 2^{21312115010134} is an apocalyptic number.

21312115010134 is a deficient number, since it is larger than the sum of its proper divisors (15314971492586).

21312115010134 is a wasteful number, since it uses less digits than its factorization.

21312115010134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071425.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 21312115010134 its reverse (43101051121312), we get a palindrome (64413166131446).

The spelling of 21312115010134 in words is "twenty-one trillion, three hundred twelve billion, one hundred fifteen million, ten thousand, one hundred thirty-four".