200202000122021 has 2 divisors, whose sum is σ = 200202000122022. Its totient is φ = 200202000122020.

The previous prime is 200202000121901. The next prime is 200202000122027. The reversal of 200202000122021 is 120221000202002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187480037752225 + 12721962369796 = 13692335^2 + 3566786^2 .

It is a cyclic number.

It is not a de Polignac number, because 200202000122021 - 2¹⁴ = 200202000105637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200202000121987 and 200202000122005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200202000122027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100101000061010 + 100101000061011.

It is an arithmetic number, because the mean of its divisors is an integer number (100101000061011).

Almost surely, 2^{200202000122021} is an apocalyptic number.

It is an amenable number.

200202000122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200202000122021 is an equidigital number, since it uses as much as digits as its factorization.

200202000122021 is an evil number, because the sum of its binary digits is even.

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

Adding to 200202000122021 its reverse (120221000202002), we get a palindrome (320423000324023).

The spelling of 200202000122021 in words is "two hundred trillion, two hundred two billion, one hundred twenty-two thousand, twenty-one".