200012342021 has 2 divisors, whose sum is σ = 200012342022. Its totient is φ = 200012342020.

The previous prime is 200012341993. The next prime is 200012342041. The reversal of 200012342021 is 120243210002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193894912225 + 6117429796 = 440335^2 + 78214^2 .

It is a cyclic number.

It is not a de Polignac number, because 200012342021 - 2⁶ = 200012341957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200012342041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100006171010 + 100006171011.

It is an arithmetic number, because the mean of its divisors is an integer number (100006171011).

Almost surely, 2^200012342021 is an apocalyptic number.

It is an amenable number.

200012342021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200012342021 is an equidigital number, since it uses as much as digits as its factorization.

200012342021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 200012342021 its reverse (120243210002), we get a palindrome (320255552023).

The spelling of 200012342021 in words is "two hundred billion, twelve million, three hundred forty-two thousand, twenty-one".