252561022201 has 16 divisors (see below), whose sum is σ = 274847263360. Its totient is φ = 231259795200.

The previous prime is 252561022013. The next prime is 252561022213. The reversal of 252561022201 is 102220165252.

It is a cyclic number.

It is not a de Polignac number, because 252561022201 - 2¹⁵ = 252560989433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252561022201.

It is not an unprimeable number, because it can be changed into a prime (252561022501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083456 + ... + 1295761.

It is an arithmetic number, because the mean of its divisors is an integer number (17177953960).

Almost surely, 2^252561022201 is an apocalyptic number.

It is an amenable number.

252561022201 is a deficient number, since it is larger than the sum of its proper divisors (22286241159).

252561022201 is a wasteful number, since it uses less digits than its factorization.

252561022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379424.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 252561022201 its reverse (102220165252), we get a palindrome (354781187453).

The spelling of 252561022201 in words is "two hundred fifty-two billion, five hundred sixty-one million, twenty-two thousand, two hundred one".