2021121002011 has 2 divisors, whose sum is σ = 2021121002012. Its totient is φ = 2021121002010.

The previous prime is 2021121001981. The next prime is 2021121002029. The reversal of 2021121002011 is 1102001211202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021121002011 - 2¹³ = 2021120993819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021121001982 and 2021121002000.

It is not a weakly prime, because it can be changed into another prime (2021121002051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010560501005 + 1010560501006.

It is an arithmetic number, because the mean of its divisors is an integer number (1010560501006).

Almost surely, 2^{2021121002011} is an apocalyptic number.

2021121002011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021121002011 is an equidigital number, since it uses as much as digits as its factorization.

2021121002011 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 2021121002011 its reverse (1102001211202), we get a palindrome (3123122213213).

The spelling of 2021121002011 in words is "two trillion, twenty-one billion, one hundred twenty-one million, two thousand, eleven".