21252134534301 has 32 divisors (see below), whose sum is σ = 34397618371200. Its totient is φ = 12861056183040.

The previous prime is 21252134534261. The next prime is 21252134534321. The reversal of 21252134534301 is 10343543125212.

21252134534301 is a `hidden beast` number, since 2 + 1 + 2 + 5 + 2 + 1 + 345 + 3 + 4 + 301 = 666.

It is not a de Polignac number, because 21252134534301 - 2¹⁹ = 21252134010013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21252134534321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52646796 + ... + 53048933.

It is an arithmetic number, because the mean of its divisors is an integer number (1074925574100).

Almost surely, 2^{21252134534301} is an apocalyptic number.

It is an amenable number.

21252134534301 is a deficient number, since it is larger than the sum of its proper divisors (13145483836899).

21252134534301 is a wasteful number, since it uses less digits than its factorization.

21252134534301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105696426 (or 105696420 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 21252134534301 its reverse (10343543125212), we get a palindrome (31595677659513).

The spelling of 21252134534301 in words is "twenty-one trillion, two hundred fifty-two billion, one hundred thirty-four million, five hundred thirty-four thousand, three hundred one".