200200120220021 has 4 divisors (see below), whose sum is σ = 200200624446732. Its totient is φ = 200199615993312.

The previous prime is 200200120220003. The next prime is 200200120220039. The reversal of 200200120220021 is 120022021002002.

200200120220021 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.

It is an interprime number because it is at equal distance from previous prime (200200120220003) and next prime (200200120220039).

It can be written as a sum of positive squares in 2 ways, for example, as 65654735823121 + 134545384396900 = 8102761^2 + 11599370^2 .

It is a cyclic number.

It is not a de Polignac number, because 200200120220021 - 2¹⁴ = 200200120203637 is a prime.

It is a super-2 number, since 2×200200120220021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200200120219978 and 200200120220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200200120220621) 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, 251517320 + ... + 252312033.

It is an arithmetic number, because the mean of its divisors is an integer number (50050156111683).

Almost surely, 2^{200200120220021} is an apocalyptic number.

It is an amenable number.

200200120220021 is a deficient number, since it is larger than the sum of its proper divisors (504226711).

200200120220021 is an equidigital number, since it uses as much as digits as its factorization.

200200120220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504226710.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 200200120220021 its reverse (120022021002002), we get a palindrome (320222141222023).

The spelling of 200200120220021 in words is "two hundred trillion, two hundred billion, one hundred twenty million, two hundred twenty thousand, twenty-one".