102271121 has 2 divisors, whose sum is σ = 102271122. Its totient is φ = 102271120.

The previous prime is 102271111. The next prime is 102271159. The reversal of 102271121 is 121172201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102010000 + 261121 = 10100^2 + 511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102271121 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102271121.

It is not a weakly prime, because it can be changed into another prime (102271111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51135560 + 51135561.

It is an arithmetic number, because the mean of its divisors is an integer number (51135561).

Almost surely, 2^102271121 is an apocalyptic number.

It is an amenable number.

102271121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102271121 is an equidigital number, since it uses as much as digits as its factorization.

102271121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 102271121 is about 10112.9185203877. The cubic root of 102271121 is about 467.6464825466.

The spelling of 102271121 in words is "one hundred two million, two hundred seventy-one thousand, one hundred twenty-one".