200210222021 has 4 divisors (see below), whose sum is σ = 200211127500. Its totient is φ = 200209316544.

The previous prime is 200210221993. The next prime is 200210222053. The reversal of 200210222021 is 120222012002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 120222012002 = 2 ⋅60111006001.

It can be written as a sum of positive squares in 2 ways, for example, as 40701045025 + 159509176996 = 201745^2 + 399386^2 .

It is a cyclic number.

It is not a de Polignac number, because 200210222021 - 2¹⁰ = 200210220997 is a prime.

It is a super-2 number, since 2×200210222021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200210221987 and 200210222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200210222081) 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, 122855 + ... + 644603.

It is an arithmetic number, because the mean of its divisors is an integer number (50052781875).

Almost surely, 2^200210222021 is an apocalyptic number.

It is an amenable number.

200210222021 is a deficient number, since it is larger than the sum of its proper divisors (905479).

200210222021 is an equidigital number, since it uses as much as digits as its factorization.

200210222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905478.

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

Adding to 200210222021 its reverse (120222012002), we get a palindrome (320432234023).

The spelling of 200210222021 in words is "two hundred billion, two hundred ten million, two hundred twenty-two thousand, twenty-one".