1020021211211 has 2 divisors, whose sum is σ = 1020021211212. Its totient is φ = 1020021211210.

The previous prime is 1020021211201. The next prime is 1020021211229. The reversal of 1020021211211 is 1121121200201.

It is a weak prime.

It is an emirp because it is prime and its reverse (1121121200201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020021211211 - 2¹⁸ = 1020020949067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020021211201) 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, 510010605605 + 510010605606.

It is an arithmetic number, because the mean of its divisors is an integer number (510010605606).

Almost surely, 2^{1020021211211} is an apocalyptic number.

1020021211211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020021211211 is an equidigital number, since it uses as much as digits as its factorization.

1020021211211 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 1020021211211 its reverse (1121121200201), we get a palindrome (2141142411412).

The spelling of 1020021211211 in words is "one trillion, twenty billion, twenty-one million, two hundred eleven thousand, two hundred eleven".