102121297 has 4 divisors (see below), whose sum is σ = 102205620. Its totient is φ = 102036976.

The previous prime is 102121273. The next prime is 102121303. The reversal of 102121297 is 792121201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 792121201 = 1223 ⋅647687.

It can be written as a sum of positive squares in 2 ways, for example, as 80442961 + 21678336 = 8969^2 + 4656^2 .

It is a cyclic number.

It is not a de Polignac number, because 102121297 - 2¹¹ = 102119249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102121207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40318 + ... + 42775.

It is an arithmetic number, because the mean of its divisors is an integer number (25551405).

Almost surely, 2^102121297 is an apocalyptic number.

It is an amenable number.

102121297 is a deficient number, since it is larger than the sum of its proper divisors (84323).

102121297 is an equidigital number, since it uses as much as digits as its factorization.

102121297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84322.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 102121297 is about 10105.5082504543. The cubic root of 102121297 is about 467.4180084411.

Adding to 102121297 its reverse (792121201), we get a palindrome (894242498).

The spelling of 102121297 in words is "one hundred two million, one hundred twenty-one thousand, two hundred ninety-seven".