200123212001 has 4 divisors (see below), whose sum is σ = 200126724912. Its totient is φ = 200119699092.

The previous prime is 200123211949. The next prime is 200123212013. The reversal of 200123212001 is 100212321002.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100212321002 = 2 ⋅50106160501.

It is a cyclic number.

It is not a de Polignac number, because 200123212001 - 2²² = 200119017697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200123217001) 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 3 ways as a sum of consecutive naturals, for example, 1669571 + ... + 1785416.

It is an arithmetic number, because the mean of its divisors is an integer number (50031681228).

Almost surely, 2^200123212001 is an apocalyptic number.

It is an amenable number.

200123212001 is a deficient number, since it is larger than the sum of its proper divisors (3512911).

200123212001 is an equidigital number, since it uses as much as digits as its factorization.

200123212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512910.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 200123212001 its reverse (100212321002), we get a palindrome (300335533003).

The spelling of 200123212001 in words is "two hundred billion, one hundred twenty-three million, two hundred twelve thousand, one".