2211010001021 has 2 divisors, whose sum is σ = 2211010001022. Its totient is φ = 2211010001020.

The previous prime is 2211010000987. The next prime is 2211010001027. The reversal of 2211010001021 is 1201000101122.

2211010001021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1967457880921 + 243552120100 = 1402661^2 + 493510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211010001021 - 2¹⁰ = 2211009999997 is a prime.

It is a super-2 number, since 2×2211010001021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211010000993 and 2211010001011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211010001027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105505000510 + 1105505000511.

It is an arithmetic number, because the mean of its divisors is an integer number (1105505000511).

Almost surely, 2^{2211010001021} is an apocalyptic number.

It is an amenable number.

2211010001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211010001021 is an equidigital number, since it uses as much as digits as its factorization.

2211010001021 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 11.

Adding to 2211010001021 its reverse (1201000101122), we get a palindrome (3412010102143).

The spelling of 2211010001021 in words is "two trillion, two hundred eleven billion, ten million, one thousand, twenty-one".