200120200223021 has 32 divisors (see below), whose sum is σ = 216462268656480. Its totient is φ = 183914715193344.

The previous prime is 200120200222937. The next prime is 200120200223023. The reversal of 200120200223021 is 120322002021002.

It can be written as a sum of positive squares in 16 ways, for example, as 176189651586025 + 23930548636996 = 13273645^2 + 4891886^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120200223021 - 2³⁸ = 199845322316077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200120200223023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50168010095 + ... + 50168014083.

It is an arithmetic number, because the mean of its divisors is an integer number (6764445895515).

Almost surely, 2^{200120200223021} is an apocalyptic number.

It is an amenable number.

200120200223021 is a deficient number, since it is larger than the sum of its proper divisors (16342068433459).

200120200223021 is a wasteful number, since it uses less digits than its factorization.

200120200223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11745.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 200120200223021 its reverse (120322002021002), we get a palindrome (320442202244023).

The spelling of 200120200223021 in words is "two hundred trillion, one hundred twenty billion, two hundred million, two hundred twenty-three thousand, twenty-one".