200022122021 has 2 divisors, whose sum is σ = 200022122022. Its totient is φ = 200022122020.

The previous prime is 200022122017. The next prime is 200022122087. The reversal of 200022122021 is 120221220002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195022924996 + 4999197025 = 441614^2 + 70705^2 .

It is a cyclic number.

It is not a de Polignac number, because 200022122021 - 2² = 200022122017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200022121987 and 200022122005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200022125021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100011061010 + 100011061011.

It is an arithmetic number, because the mean of its divisors is an integer number (100011061011).

Almost surely, 2^200022122021 is an apocalyptic number.

It is an amenable number.

200022122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200022122021 is an equidigital number, since it uses as much as digits as its factorization.

200022122021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 200022122021 its reverse (120221220002), we get a palindrome (320243342023).

The spelling of 200022122021 in words is "two hundred billion, twenty-two million, one hundred twenty-two thousand, twenty-one".