210012221233121 has 2 divisors, whose sum is σ = 210012221233122. Its totient is φ = 210012221233120.

The previous prime is 210012221233069. The next prime is 210012221233189. The reversal of 210012221233121 is 121332122210012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187376702250721 + 22635518982400 = 13688561^2 + 4757680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210012221233121 is a prime.

It is not a weakly prime, because it can be changed into another prime (210012221233921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105006110616560 + 105006110616561.

It is an arithmetic number, because the mean of its divisors is an integer number (105006110616561).

Almost surely, 2^{210012221233121} is an apocalyptic number.

It is an amenable number.

210012221233121 is a deficient number, since it is larger than the sum of its proper divisors (1).

210012221233121 is an equidigital number, since it uses as much as digits as its factorization.

210012221233121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 210012221233121 its reverse (121332122210012), we get a palindrome (331344343443133).

The spelling of 210012221233121 in words is "two hundred ten trillion, twelve billion, two hundred twenty-one million, two hundred thirty-three thousand, one hundred twenty-one".