211302330022021 has 12 divisors (see below), whose sum is σ = 245804746853388. Its totient is φ = 181113278596992.

The previous prime is 211302330022019. The next prime is 211302330022073. The reversal of 211302330022021 is 120220033203112.

It can be written as a sum of positive squares in 2 ways, for example, as 138660374871396 + 72641955150625 = 11775414^2 + 8523025^2 .

It is not a de Polignac number, because 211302330022021 - 2¹ = 211302330022019 is a prime.

It is a super-3 number, since 3×211302330022021³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211302330021983 and 211302330022001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211302030022021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32778546 + ... + 38691571.

It is an arithmetic number, because the mean of its divisors is an integer number (20483728904449).

Almost surely, 2^{211302330022021} is an apocalyptic number.

It is an amenable number.

211302330022021 is a deficient number, since it is larger than the sum of its proper divisors (34502416831367).

211302330022021 is an equidigital number, since it uses as much as digits as its factorization.

211302330022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71530468 (or 71530461 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 211302330022021 its reverse (120220033203112), we get a palindrome (331522363225133).

The spelling of 211302330022021 in words is "two hundred eleven trillion, three hundred two billion, three hundred thirty million, twenty-two thousand, twenty-one".