102212377 has 2 divisors, whose sum is σ = 102212378. Its totient is φ = 102212376.

The previous prime is 102212371. The next prime is 102212387. The reversal of 102212377 is 773212201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84437721 + 17774656 = 9189^2 + 4216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102212377 is a prime.

It is not a weakly prime, because it can be changed into another prime (102212371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106188 + 51106189.

It is an arithmetic number, because the mean of its divisors is an integer number (51106189).

Almost surely, 2^102212377 is an apocalyptic number.

It is an amenable number.

102212377 is a deficient number, since it is larger than the sum of its proper divisors (1).

102212377 is an equidigital number, since it uses as much as digits as its factorization.

102212377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 102212377 is about 10110.0136992983. The cubic root of 102212377 is about 467.5569274953.

Adding to 102212377 its reverse (773212201), we get a palindrome (875424578).

The spelling of 102212377 in words is "one hundred two million, two hundred twelve thousand, three hundred seventy-seven".