2011202021021 has 2 divisors, whose sum is σ = 2011202021022. Its totient is φ = 2011202021020.

The previous prime is 2011202020999. The next prime is 2011202021053. The reversal of 2011202021021 is 1201202021102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1263962796121 + 747239224900 = 1124261^2 + 864430^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011202021021 - 2¹⁸ = 2011201758877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011202020987 and 2011202021005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011202021821) 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, 1005601010510 + 1005601010511.

It is an arithmetic number, because the mean of its divisors is an integer number (1005601010511).

Almost surely, 2^{2011202021021} is an apocalyptic number.

It is an amenable number.

2011202021021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011202021021 is an equidigital number, since it uses as much as digits as its factorization.

2011202021021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2011202021021 its reverse (1201202021102), we get a palindrome (3212404042123).

The spelling of 2011202021021 in words is "two trillion, eleven billion, two hundred two million, twenty-one thousand, twenty-one".