252320220521201 has 64 divisors (see below), whose sum is σ = 322853136076800. Its totient is φ = 192216521097216.

The previous prime is 252320220521129. The next prime is 252320220521203. The reversal of 252320220521201 is 102125022023252.

It is not a de Polignac number, because 252320220521201 - 2¹⁰ = 252320220520177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252320220521203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76533905 + ... + 79762641.

It is an arithmetic number, because the mean of its divisors is an integer number (5044580251200).

Almost surely, 2^{252320220521201} is an apocalyptic number.

It is an amenable number.

252320220521201 is a deficient number, since it is larger than the sum of its proper divisors (70532915555599).

252320220521201 is a wasteful number, since it uses less digits than its factorization.

252320220521201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229278.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 252320220521201 its reverse (102125022023252), we get a palindrome (354445242544453).

The spelling of 252320220521201 in words is "two hundred fifty-two trillion, three hundred twenty billion, two hundred twenty million, five hundred twenty-one thousand, two hundred one".