2021211101011 has 2 divisors, whose sum is σ = 2021211101012. Its totient is φ = 2021211101010.

The previous prime is 2021211100873. The next prime is 2021211101087. The reversal of 2021211101011 is 1101011121202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021211101011 - 2²¹ = 2021209003859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021211100982 and 2021211101000.

It is not a weakly prime, because it can be changed into another prime (2021211171011) 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, 1010605550505 + 1010605550506.

It is an arithmetic number, because the mean of its divisors is an integer number (1010605550506).

Almost surely, 2^{2021211101011} is an apocalyptic number.

2021211101011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021211101011 is an equidigital number, since it uses as much as digits as its factorization.

2021211101011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2021211101011 its reverse (1101011121202), we get a palindrome (3122222222213).

The spelling of 2021211101011 in words is "two trillion, twenty-one billion, two hundred eleven million, one hundred one thousand, eleven".