102205387 has 2 divisors, whose sum is σ = 102205388. Its totient is φ = 102205386.

The previous prime is 102205361. The next prime is 102205393. The reversal of 102205387 is 783502201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102205387 - 2¹⁵ = 102172619 is a prime.

It is a super-2 number, since 2×102205387² = 20891882263639538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102205687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51102693 + 51102694.

It is an arithmetic number, because the mean of its divisors is an integer number (51102694).

Almost surely, 2^102205387 is an apocalyptic number.

102205387 is a deficient number, since it is larger than the sum of its proper divisors (1).

102205387 is an equidigital number, since it uses as much as digits as its factorization.

102205387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 102205387 is about 10109.6679965269. The cubic root of 102205387 is about 467.5462689771.

Adding to 102205387 its reverse (783502201), we get a palindrome (885707588).

The spelling of 102205387 in words is "one hundred two million, two hundred five thousand, three hundred eighty-seven".