102212287 has 2 divisors, whose sum is σ = 102212288. Its totient is φ = 102212286.

The previous prime is 102212261. The next prime is 102212293. The reversal of 102212287 is 782212201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102212287 is a prime.

It is a super-2 number, since 2×102212287² = 20894703227540738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102212237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106143 + 51106144.

It is an arithmetic number, because the mean of its divisors is an integer number (51106144).

Almost surely, 2^102212287 is an apocalyptic number.

102212287 is a deficient number, since it is larger than the sum of its proper divisors (1).

102212287 is an equidigital number, since it uses as much as digits as its factorization.

102212287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 102212287 is about 10110.0092482648. The cubic root of 102212287 is about 467.5567902642.

Adding to 102212287 its reverse (782212201), we get a palindrome (884424488).

The spelling of 102212287 in words is "one hundred two million, two hundred twelve thousand, two hundred eighty-seven".