200002921 has 2 divisors, whose sum is σ = 200002922. Its totient is φ = 200002920.

The previous prime is 200002903. The next prime is 200002939. The reversal of 200002921 is 129200002.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (200002903) and next prime (200002939).

It can be written as a sum of positive squares in only one way, i.e., 154629225 + 45373696 = 12435^2 + 6736^2 .

It is a cyclic number.

It is not a de Polignac number, because 200002921 - 2⁹ = 200002409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200002895 and 200002904.

It is not a weakly prime, because it can be changed into another prime (200002951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100001460 + 100001461.

It is an arithmetic number, because the mean of its divisors is an integer number (100001461).

Almost surely, 2^200002921 is an apocalyptic number.

It is an amenable number.

200002921 is a deficient number, since it is larger than the sum of its proper divisors (1).

200002921 is an equidigital number, since it uses as much as digits as its factorization.

200002921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 200002921 is about 14142.2388962993. The cubic root of 200002921 is about 584.8063946473.

Adding to 200002921 its reverse (129200002), we get a palindrome (329202923).

The spelling of 200002921 in words is "two hundred million, two thousand, nine hundred twenty-one".