2101020021211 has 2 divisors, whose sum is σ = 2101020021212. Its totient is φ = 2101020021210.

The previous prime is 2101020021197. The next prime is 2101020021239. The reversal of 2101020021211 is 1121200201012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101020021211 - 2⁷ = 2101020021083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101020021191 and 2101020021200.

It is not a weakly prime, because it can be changed into another prime (2101020021241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050510010605 + 1050510010606.

It is an arithmetic number, because the mean of its divisors is an integer number (1050510010606).

Almost surely, 2^{2101020021211} is an apocalyptic number.

2101020021211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101020021211 is an equidigital number, since it uses as much as digits as its factorization.

2101020021211 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 13.

Adding to 2101020021211 its reverse (1121200201012), we get a palindrome (3222220222223).

The spelling of 2101020021211 in words is "two trillion, one hundred one billion, twenty million, twenty-one thousand, two hundred eleven".