245201212321 has 8 divisors (see below), whose sum is σ = 264314107904. Its totient is φ = 226124211600.

The previous prime is 245201212247. The next prime is 245201212339. The reversal of 245201212321 is 123212102542.

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 245201212321 - 2²⁹ = 244664341409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245201212391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8959521 + ... + 8986846.

It is an arithmetic number, because the mean of its divisors is an integer number (33039263488).

Almost surely, 2^245201212321 is an apocalyptic number.

It is an amenable number.

245201212321 is a deficient number, since it is larger than the sum of its proper divisors (19112895583).

245201212321 is a wasteful number, since it uses less digits than its factorization.

245201212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17947431.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 245201212321 its reverse (123212102542), we get a palindrome (368413314863).

The spelling of 245201212321 in words is "two hundred forty-five billion, two hundred one million, two hundred twelve thousand, three hundred twenty-one".