1200300121 has 2 divisors, whose sum is σ = 1200300122. Its totient is φ = 1200300120.

The previous prime is 1200300107. The next prime is 1200300131. The reversal of 1200300121 is 1210030021.

It is an a-pointer prime, because the next prime (1200300131) can be obtained adding 1200300121 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 722265625 + 478034496 = 26875^2 + 21864^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200300121 - 2⁹ = 1200299609 is a prime.

It is a super-2 number, since 2×1200300121² = 2881440760945229282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200300098 and 1200300107.

It is not a weakly prime, because it can be changed into another prime (1200300131) 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, 600150060 + 600150061.

It is an arithmetic number, because the mean of its divisors is an integer number (600150061).

Almost surely, 2^1200300121 is an apocalyptic number.

It is an amenable number.

1200300121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200300121 is an equidigital number, since it uses as much as digits as its factorization.

1200300121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1200300121 is about 34645.3477540636. The cubic root of 1200300121 is about 1062.7471523960.

Adding to 1200300121 its reverse (1210030021), we get a palindrome (2410330142).

The spelling of 1200300121 in words is "one billion, two hundred million, three hundred thousand, one hundred twenty-one".