212321022 has 16 divisors (see below), whose sum is σ = 436119312. Its totient is φ = 68860800.

The previous prime is 212321003. The next prime is 212321051. The reversal of 212321022 is 220123212.

It is a happy number.

It is a super-3 number, since 3×212321022³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212320992 and 212321010.

It is a congruent number.

It is an unprimeable number.

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, 477979 + ... + 478422.

It is an arithmetic number, because the mean of its divisors is an integer number (27257457).

Almost surely, 2^212321022 is an apocalyptic number.

212321022 is an abundant number, since it is smaller than the sum of its proper divisors (223798290).

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

212321022 is a wasteful number, since it uses less digits than its factorization.

212321022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956443.

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

The square root of 212321022 is about 14571.2395491942. The cubic root of 212321022 is about 596.5740138201.

Adding to 212321022 its reverse (220123212), we get a palindrome (432444234).

The spelling of 212321022 in words is "two hundred twelve million, three hundred twenty-one thousand, twenty-two".