211134022021 has 16 divisors (see below), whose sum is σ = 230592552624. Its totient is φ = 192137508864.

The previous prime is 211134022007. The next prime is 211134022111. The reversal of 211134022021 is 120220431112.

It can be written as a sum of positive squares in 8 ways, for example, as 34507149121 + 176626872900 = 185761^2 + 420270^2 .

It is a cyclic number.

It is not a de Polignac number, because 211134022021 - 2¹¹ = 211134019973 is a prime.

It is a super-2 number, since 2×211134022021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211134022021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211134022321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2131425 + ... + 2228281.

It is an arithmetic number, because the mean of its divisors is an integer number (14412034539).

Almost surely, 2^211134022021 is an apocalyptic number.

It is an amenable number.

211134022021 is a deficient number, since it is larger than the sum of its proper divisors (19458530603).

211134022021 is a wasteful number, since it uses less digits than its factorization.

211134022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99240.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 211134022021 its reverse (120220431112), we get a palindrome (331354453133).

The spelling of 211134022021 in words is "two hundred eleven billion, one hundred thirty-four million, twenty-two thousand, twenty-one".