2100210121211 has 2 divisors, whose sum is σ = 2100210121212. Its totient is φ = 2100210121210.

The previous prime is 2100210121201. The next prime is 2100210121277. The reversal of 2100210121211 is 1121210120012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2100210121211 - 2⁶ = 2100210121147 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100210121201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050105060605 + 1050105060606.

It is an arithmetic number, because the mean of its divisors is an integer number (1050105060606).

Almost surely, 2^{2100210121211} is an apocalyptic number.

2100210121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100210121211 is an equidigital number, since it uses as much as digits as its factorization.

2100210121211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2100210121211 its reverse (1121210120012), we get a palindrome (3221420241223).

The spelling of 2100210121211 in words is "two trillion, one hundred billion, two hundred ten million, one hundred twenty-one thousand, two hundred eleven".