212340022 has 4 divisors (see below), whose sum is σ = 318510036. Its totient is φ = 106170010.

The previous prime is 212340019. The next prime is 212340041. The reversal of 212340022 is 220043212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212339978 and 212340005.

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, 53085004 + ... + 53085007.

It is an arithmetic number, because the mean of its divisors is an integer number (79627509).

Almost surely, 2^212340022 is an apocalyptic number.

212340022 is a deficient number, since it is larger than the sum of its proper divisors (106170014).

212340022 is a wasteful number, since it uses less digits than its factorization.

212340022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106170013.

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

The square root of 212340022 is about 14571.8915038508. The cubic root of 212340022 is about 596.5918085225.

Adding to 212340022 its reverse (220043212), we get a palindrome (432383234).

The spelling of 212340022 in words is "two hundred twelve million, three hundred forty thousand, twenty-two".