211322231203121 has 2 divisors, whose sum is σ = 211322231203122. Its totient is φ = 211322231203120.

The previous prime is 211322231203117. The next prime is 211322231203159. The reversal of 211322231203121 is 121302132223112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208452812031025 + 2869419172096 = 14437895^2 + 1693936^2 .

It is a cyclic number.

It is not a de Polignac number, because 211322231203121 - 2² = 211322231203117 is a prime.

It is not a weakly prime, because it can be changed into another prime (211322231203921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105661115601560 + 105661115601561.

It is an arithmetic number, because the mean of its divisors is an integer number (105661115601561).

Almost surely, 2^{211322231203121} is an apocalyptic number.

It is an amenable number.

211322231203121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211322231203121 is an equidigital number, since it uses as much as digits as its factorization.

211322231203121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 211322231203121 its reverse (121302132223112), we get a palindrome (332624363426233).

The spelling of 211322231203121 in words is "two hundred eleven trillion, three hundred twenty-two billion, two hundred thirty-one million, two hundred three thousand, one hundred twenty-one".