200120555401 has 4 divisors (see below), whose sum is σ = 215514444292. Its totient is φ = 184726666512.

The previous prime is 200120555359. The next prime is 200120555417. The reversal of 200120555401 is 104555021002.

200120555401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104555021002 = 2 ⋅52277510501.

It can be written as a sum of positive squares in 2 ways, for example, as 131359129225 + 68761426176 = 362435^2 + 262224^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120555401 - 2²⁵ = 200087000969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200120555431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7696944426 + ... + 7696944451.

It is an arithmetic number, because the mean of its divisors is an integer number (53878611073).

Almost surely, 2^200120555401 is an apocalyptic number.

It is an amenable number.

200120555401 is a deficient number, since it is larger than the sum of its proper divisors (15393888891).

200120555401 is a wasteful number, since it uses less digits than its factorization.

200120555401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15393888890.

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 200120555401 its reverse (104555021002), we get a palindrome (304675576403).

The spelling of 200120555401 in words is "two hundred billion, one hundred twenty million, five hundred fifty-five thousand, four hundred one".