102121141 has 2 divisors, whose sum is σ = 102121142. Its totient is φ = 102121140.

The previous prime is 102121139. The next prime is 102121157. The reversal of 102121141 is 141121201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100922116 + 1199025 = 10046^2 + 1095^2 .

It is a cyclic number.

It is not a de Polignac number, because 102121141 - 2¹ = 102121139 is a prime.

Together with 102121139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102125141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060570 + 51060571.

It is an arithmetic number, because the mean of its divisors is an integer number (51060571).

Almost surely, 2^102121141 is an apocalyptic number.

It is an amenable number.

102121141 is a deficient number, since it is larger than the sum of its proper divisors (1).

102121141 is an equidigital number, since it uses as much as digits as its factorization.

102121141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 102121141 is about 10105.5005318886. The cubic root of 102121141 is about 467.4177704325.

Adding to 102121141 its reverse (141121201), we get a palindrome (243242342).

The spelling of 102121141 in words is "one hundred two million, one hundred twenty-one thousand, one hundred forty-one".