21355234114151 has 32 divisors (see below), whose sum is σ = 24565569600000. Its totient is φ = 18185298066432.

The previous prime is 21355234114147. The next prime is 21355234114189. The reversal of 21355234114151 is 15141143255312.

It is not a de Polignac number, because 21355234114151 - 2² = 21355234114147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21355234111151) 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 31 ways as a sum of consecutive naturals, for example, 775722155 + ... + 775749683.

It is an arithmetic number, because the mean of its divisors is an integer number (767674050000).

Almost surely, 2^{21355234114151} is an apocalyptic number.

21355234114151 is a deficient number, since it is larger than the sum of its proper divisors (3210335485849).

21355234114151 is a wasteful number, since it uses less digits than its factorization.

21355234114151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29031.

The product of its digits is 72000, while the sum is 38.

Adding to 21355234114151 its reverse (15141143255312), we get a palindrome (36496377369463).

The spelling of 21355234114151 in words is "twenty-one trillion, three hundred fifty-five billion, two hundred thirty-four million, one hundred fourteen thousand, one hundred fifty-one".