211314022021 has 4 divisors (see below), whose sum is σ = 211327964172. Its totient is φ = 211300079872.

The previous prime is 211314022019. The next prime is 211314022033. The reversal of 211314022021 is 120220413112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80060702500 + 131253319521 = 282950^2 + 362289^2 .

It is a cyclic number.

It is not a de Polignac number, because 211314022021 - 2¹ = 211314022019 is a prime.

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 211314022021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211314022321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6948316 + ... + 6978661.

It is an arithmetic number, because the mean of its divisors is an integer number (52831991043).

Almost surely, 2^211314022021 is an apocalyptic number.

It is an amenable number.

211314022021 is a deficient number, since it is larger than the sum of its proper divisors (13942151).

211314022021 is a wasteful number, since it uses less digits than its factorization.

211314022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13942150.

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

Adding to 211314022021 its reverse (120220413112), we get a palindrome (331534435133).

The spelling of 211314022021 in words is "two hundred eleven billion, three hundred fourteen million, twenty-two thousand, twenty-one".