213223100212 has 6 divisors (see below), whose sum is σ = 373140425378. Its totient is φ = 106611550104.

The previous prime is 213223100191. The next prime is 213223100243. The reversal of 213223100212 is 212001322312.

It can be written as a sum of positive squares in only one way, i.e., 180832459536 + 32390640676 = 425244^2 + 179974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213223100212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26652887523 + ... + 26652887530.

Almost surely, 2^213223100212 is an apocalyptic number.

It is an amenable number.

213223100212 is a deficient number, since it is larger than the sum of its proper divisors (159917325166).

213223100212 is a wasteful number, since it uses less digits than its factorization.

213223100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53305775057 (or 53305775055 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 213223100212 its reverse (212001322312), we get a palindrome (425224422524).

The spelling of 213223100212 in words is "two hundred thirteen billion, two hundred twenty-three million, one hundred thousand, two hundred twelve".