200373212161 has 4 divisors (see below), whose sum is σ = 207282633300. Its totient is φ = 193463791024.

The previous prime is 200373212153. The next prime is 200373212183. The reversal of 200373212161 is 161212373002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41746253761 + 158626958400 = 204319^2 + 398280^2 .

It is a cyclic number.

It is not a de Polignac number, because 200373212161 - 2³ = 200373212153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200373212111) 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, 3454710526 + ... + 3454710583.

It is an arithmetic number, because the mean of its divisors is an integer number (51820658325).

Almost surely, 2^200373212161 is an apocalyptic number.

It is an amenable number.

200373212161 is a deficient number, since it is larger than the sum of its proper divisors (6909421139).

200373212161 is an equidigital number, since it uses as much as digits as its factorization.

200373212161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6909421138.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 200373212161 its reverse (161212373002), we get a palindrome (361585585163).

The spelling of 200373212161 in words is "two hundred billion, three hundred seventy-three million, two hundred twelve thousand, one hundred sixty-one".