1206336121 has 2 divisors, whose sum is σ = 1206336122. Its totient is φ = 1206336120.

The previous prime is 1206336107. The next prime is 1206336137. The reversal of 1206336121 is 1216336021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 802928896 + 403407225 = 28336^2 + 20085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206336121 - 2¹³ = 1206327929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1206336151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603168060 + 603168061.

It is an arithmetic number, because the mean of its divisors is an integer number (603168061).

Almost surely, 2^1206336121 is an apocalyptic number.

It is an amenable number.

1206336121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206336121 is an equidigital number, since it uses as much as digits as its factorization.

1206336121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1206336121 is about 34732.3497765412. The cubic root of 1206336121 is about 1064.5256017869.

It can be divided in two parts, 12063 and 36121, that added together give a palindrome (48184).

The spelling of 1206336121 in words is "one billion, two hundred six million, three hundred thirty-six thousand, one hundred twenty-one".