21150134301252 has 24 divisors (see below), whose sum is σ = 53836705494432. Its totient is φ = 6409131606400.

The previous prime is 21150134301239. The next prime is 21150134301253. The reversal of 21150134301252 is 25210343105112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21150134301253) 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, 80114144949 + ... + 80114145212.

It is an arithmetic number, because the mean of its divisors is an integer number (2243196062268).

Almost surely, 2^{21150134301252} is an apocalyptic number.

21150134301252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21150134301252 is an abundant number, since it is smaller than the sum of its proper divisors (32686571193180).

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

21150134301252 is a wasteful number, since it uses less digits than its factorization.

21150134301252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160228290179 (or 160228290177 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 21150134301252 its reverse (25210343105112), we get a palindrome (46360477406364).

The spelling of 21150134301252 in words is "twenty-one trillion, one hundred fifty billion, one hundred thirty-four million, three hundred one thousand, two hundred fifty-two".