252121000442005 has 16 divisors (see below), whose sum is σ = 303345231338880. Its totient is φ = 201163452654528.

The previous prime is 252121000441979. The next prime is 252121000442033. The reversal of 252121000442005 is 500244000121252.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252121000442005 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493303024 + ... + 493813846.

It is an arithmetic number, because the mean of its divisors is an integer number (18959076958680).

Almost surely, 2^{252121000442005} is an apocalyptic number.

It is an amenable number.

252121000442005 is a deficient number, since it is larger than the sum of its proper divisors (51224230896875).

252121000442005 is a wasteful number, since it uses less digits than its factorization.

252121000442005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771660.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 252121000442005 its reverse (500244000121252), we get a palindrome (752365000563257).

The spelling of 252121000442005 in words is "two hundred fifty-two trillion, one hundred twenty-one billion, four hundred forty-two thousand, five".