1201221212239 has 2 divisors, whose sum is σ = 1201221212240. Its totient is φ = 1201221212238.

The previous prime is 1201221212171. The next prime is 1201221212249. The reversal of 1201221212239 is 9322121221021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201221212239 - 2²¹ = 1201219115087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201221212249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600610606119 + 600610606120.

It is an arithmetic number, because the mean of its divisors is an integer number (600610606120).

Almost surely, 2^{1201221212239} is an apocalyptic number.

1201221212239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201221212239 is an equidigital number, since it uses as much as digits as its factorization.

1201221212239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 1201221212239 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two hundred twelve thousand, two hundred thirty-nine".