213220212 has 24 divisors (see below), whose sum is σ = 519145536. Its totient is φ = 67983168.

The previous prime is 213220211. The next prime is 213220229. The reversal of 213220212 is 212022312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 213220191 and 213220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213220211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385993 + ... + 386544.

It is an arithmetic number, because the mean of its divisors is an integer number (21631064).

Almost surely, 2^213220212 is an apocalyptic number.

It is an amenable number.

213220212 is an abundant number, since it is smaller than the sum of its proper divisors (305925324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213220212 is a wasteful number, since it uses less digits than its factorization.

213220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772567 (or 772565 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 213220212 is about 14602.0619091962. The cubic root of 213220212 is about 597.4150011848.

Adding to 213220212 its reverse (212022312), we get a palindrome (425242524).

The spelling of 213220212 in words is "two hundred thirteen million, two hundred twenty thousand, two hundred twelve".