213133322 has 4 divisors (see below), whose sum is σ = 319699986. Its totient is φ = 106566660.

The previous prime is 213133313. The next prime is 213133337. The reversal of 213133322 is 223331312.

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

It can be written as a sum of positive squares in only one way, i.e., 152744881 + 60388441 = 12359^2 + 7771^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213133294 and 213133303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53283329 + ... + 53283332.

Almost surely, 2^213133322 is an apocalyptic number.

213133322 is a deficient number, since it is larger than the sum of its proper divisors (106566664).

213133322 is a wasteful number, since it uses less digits than its factorization.

213133322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106566663.

The product of its digits is 648, while the sum is 20.

The square root of 213133322 is about 14599.0863412749. The cubic root of 213133322 is about 597.3338387068. Note that the first 3 decimals are identical.

Adding to 213133322 its reverse (223331312), we get a palindrome (436464634).

It can be divided in two parts, 2131 and 33322, that added together give a palindrome (35453).

The spelling of 213133322 in words is "two hundred thirteen million, one hundred thirty-three thousand, three hundred twenty-two".