111202421241409 has 2 divisors, whose sum is σ = 111202421241410. Its totient is φ = 111202421241408.

The previous prime is 111202421241407. The next prime is 111202421241479. The reversal of 111202421241409 is 904142124202111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103060261459600 + 8142159781809 = 10151860^2 + 2853447^2 .

It is a cyclic number.

It is not a de Polignac number, because 111202421241409 - 2¹ = 111202421241407 is a prime.

Together with 111202421241407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111202421241407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601210620704 + 55601210620705.

It is an arithmetic number, because the mean of its divisors is an integer number (55601210620705).

Almost surely, 2^{111202421241409} is an apocalyptic number.

It is an amenable number.

111202421241409 is a deficient number, since it is larger than the sum of its proper divisors (1).

111202421241409 is an equidigital number, since it uses as much as digits as its factorization.

111202421241409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 111202421241409 in words is "one hundred eleven trillion, two hundred two billion, four hundred twenty-one million, two hundred forty-one thousand, four hundred nine".