1020002197 has 2 divisors, whose sum is σ = 1020002198. Its totient is φ = 1020002196.

The previous prime is 1020002173. The next prime is 1020002201. The reversal of 1020002197 is 7912000201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1019780356 + 221841 = 31934^2 + 471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020002197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020002107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510001098 + 510001099.

It is an arithmetic number, because the mean of its divisors is an integer number (510001099).

Almost surely, 2^1020002197 is an apocalyptic number.

It is an amenable number.

1020002197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020002197 is an equidigital number, since it uses as much as digits as its factorization.

1020002197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1020002197 is about 31937.4732406933. The cubic root of 1020002197 is about 1006.6234322884.

Adding to 1020002197 its reverse (7912000201), we get a palindrome (8932002398).

The spelling of 1020002197 in words is "one billion, twenty million, two thousand, one hundred ninety-seven".