21120101201239 has 2 divisors, whose sum is σ = 21120101201240. Its totient is φ = 21120101201238.

The previous prime is 21120101201207. The next prime is 21120101201279. The reversal of 21120101201239 is 93210210102112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21120101201239 - 2⁵ = 21120101201207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21120101201279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560050600619 + 10560050600620.

It is an arithmetic number, because the mean of its divisors is an integer number (10560050600620).

Almost surely, 2^{21120101201239} is an apocalyptic number.

21120101201239 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120101201239 is an equidigital number, since it uses as much as digits as its factorization.

21120101201239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 21120101201239 in words is "twenty-one trillion, one hundred twenty billion, one hundred one million, two hundred one thousand, two hundred thirty-nine".