103012121 has 2 divisors, whose sum is σ = 103012122. Its totient is φ = 103012120.

The previous prime is 103012097. The next prime is 103012127. The reversal of 103012121 is 121210301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102313225 + 698896 = 10115^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 103012121 - 2⁶ = 103012057 is a prime.

It is a super-2 number, since 2×103012121² = 21222994145837282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (103012127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51506060 + 51506061.

It is an arithmetic number, because the mean of its divisors is an integer number (51506061).

Almost surely, 2^103012121 is an apocalyptic number.

It is an amenable number.

103012121 is a deficient number, since it is larger than the sum of its proper divisors (1).

103012121 is an equidigital number, since it uses as much as digits as its factorization.

103012121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 103012121 is about 10149.4887063339. The cubic root of 103012121 is about 468.7732016723.

Adding to 103012121 its reverse (121210301), we get a palindrome (224222422).

The spelling of 103012121 in words is "one hundred three million, twelve thousand, one hundred twenty-one".