212230021323 has 16 divisors (see below), whose sum is σ = 283485869856. Its totient is φ = 141230568960.

The previous prime is 212230021271. The next prime is 212230021327. The reversal of 212230021323 is 323120032212.

It is a happy number.

It is not a de Polignac number, because 212230021323 - 2¹² = 212230017227 is a prime.

It is a super-2 number, since 2×212230021323² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212230021323.

It is not an unprimeable number, because it can be changed into a prime (212230021327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6712933 + ... + 6744473.

It is an arithmetic number, because the mean of its divisors is an integer number (17717866866).

Almost surely, 2^212230021323 is an apocalyptic number.

212230021323 is a deficient number, since it is larger than the sum of its proper divisors (71255848533).

212230021323 is a wasteful number, since it uses less digits than its factorization.

212230021323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35534.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 212230021323 its reverse (323120032212), we get a palindrome (535350053535).

The spelling of 212230021323 in words is "two hundred twelve billion, two hundred thirty million, twenty-one thousand, three hundred twenty-three".