200211212021 has 2 divisors, whose sum is σ = 200211212022. Its totient is φ = 200211212020.

The previous prime is 200211212017. The next prime is 200211212029. The reversal of 200211212021 is 120212112002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100330562500 + 99880649521 = 316750^2 + 316039^2 .

It is a cyclic number.

It is not a de Polignac number, because 200211212021 - 2² = 200211212017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200211211987 and 200211212005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200211212029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100105606010 + 100105606011.

It is an arithmetic number, because the mean of its divisors is an integer number (100105606011).

Almost surely, 2^200211212021 is an apocalyptic number.

It is an amenable number.

200211212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200211212021 is an equidigital number, since it uses as much as digits as its factorization.

200211212021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200211212021 its reverse (120212112002), we get a palindrome (320423324023).

The spelling of 200211212021 in words is "two hundred billion, two hundred eleven million, two hundred twelve thousand, twenty-one".