252435123221 has 8 divisors (see below), whose sum is σ = 260584652544. Its totient is φ = 244285997760.

The previous prime is 252435123203. The next prime is 252435123229. The reversal of 252435123221 is 122321534252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252435123221 - 2¹⁴ = 252435106837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252435123229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1653506 + ... + 1799708.

It is an arithmetic number, because the mean of its divisors is an integer number (32573081568).

Almost surely, 2^252435123221 is an apocalyptic number.

It is an amenable number.

252435123221 is a deficient number, since it is larger than the sum of its proper divisors (8149529323).

252435123221 is a wasteful number, since it uses less digits than its factorization.

252435123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201931.

The product of its digits is 28800, while the sum is 32.

Adding to 252435123221 its reverse (122321534252), we get a palindrome (374756657473).

The spelling of 252435123221 in words is "two hundred fifty-two billion, four hundred thirty-five million, one hundred twenty-three thousand, two hundred twenty-one".