252120199801 has 4 divisors (see below), whose sum is σ = 260253109504. Its totient is φ = 243987290100.

The previous prime is 252120199789. The next prime is 252120199831. The reversal of 252120199801 is 108991021252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252120199801 - 2²⁹ = 251583328889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252120199831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4066454805 + ... + 4066454866.

It is an arithmetic number, because the mean of its divisors is an integer number (65063277376).

Almost surely, 2^252120199801 is an apocalyptic number.

It is an amenable number.

252120199801 is a deficient number, since it is larger than the sum of its proper divisors (8132909703).

252120199801 is an equidigital number, since it uses as much as digits as its factorization.

252120199801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8132909702.

The product of its (nonzero) digits is 25920, while the sum is 40.

The spelling of 252120199801 in words is "two hundred fifty-two billion, one hundred twenty million, one hundred ninety-nine thousand, eight hundred one".