213040222 has 4 divisors (see below), whose sum is σ = 319560336. Its totient is φ = 106520110.

The previous prime is 213040213. The next prime is 213040229. The reversal of 213040222 is 222040312.

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

It is a super-2 number, since 2×213040222² = 90772272379618568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213040196 and 213040205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213040229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53260054 + ... + 53260057.

It is an arithmetic number, because the mean of its divisors is an integer number (79890084).

Almost surely, 2^213040222 is an apocalyptic number.

213040222 is a deficient number, since it is larger than the sum of its proper divisors (106520114).

213040222 is a wasteful number, since it uses less digits than its factorization.

213040222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106520113.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 213040222 is about 14595.8974372938. The cubic root of 213040222 is about 597.2468510892.

Adding to 213040222 its reverse (222040312), we get a palindrome (435080534).

The spelling of 213040222 in words is "two hundred thirteen million, forty thousand, two hundred twenty-two".