213422224 has 10 divisors (see below), whose sum is σ = 413505590. Its totient is φ = 106711104.

The previous prime is 213422177. The next prime is 213422239. The reversal of 213422224 is 422224312.

It can be written as a sum of positive squares in only one way, i.e., 144000000 + 69422224 = 12000^2 + 8332^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213422195 and 213422204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6669429 + ... + 6669460.

It is an arithmetic number, because the mean of its divisors is an integer number (41350559).

Almost surely, 2^213422224 is an apocalyptic number.

It is an amenable number.

213422224 is a deficient number, since it is larger than the sum of its proper divisors (200083366).

213422224 is a wasteful number, since it uses less digits than its factorization.

213422224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13338897 (or 13338891 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 213422224 is about 14608.9775138440. The cubic root of 213422224 is about 597.6036119868.

Adding to 213422224 its reverse (422224312), we get a palindrome (635646536).

The spelling of 213422224 in words is "two hundred thirteen million, four hundred twenty-two thousand, two hundred twenty-four".