21126145323135 has 8 divisors (see below), whose sum is σ = 33801832517040. Its totient is φ = 11267277505664.

The previous prime is 21126145323133. The next prime is 21126145323137. The reversal of 21126145323135 is 53132354162112.

It is an interprime number because it is at equal distance from previous prime (21126145323133) and next prime (21126145323137).

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

It is a cyclic number.

It is not a de Polignac number, because 21126145323135 - 2¹ = 21126145323133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21126145323093 and 21126145323102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21126145323133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 704204844090 + ... + 704204844119.

It is an arithmetic number, because the mean of its divisors is an integer number (4225229064630).

Almost surely, 2^{21126145323135} is an apocalyptic number.

21126145323135 is a deficient number, since it is larger than the sum of its proper divisors (12675687193905).

21126145323135 is a wasteful number, since it uses less digits than its factorization.

21126145323135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408409688217.

The product of its digits is 129600, while the sum is 39.

Adding to 21126145323135 its reverse (53132354162112), we get a palindrome (74258499485247).

The spelling of 21126145323135 in words is "twenty-one trillion, one hundred twenty-six billion, one hundred forty-five million, three hundred twenty-three thousand, one hundred thirty-five".