212122 has 8 divisors (see below), whose sum is σ = 323136. Its totient is φ = 104412.

The previous prime is 212117. The next prime is 212123. The reversal of 212122 is 221212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 212099 and 212108.

It is not an unprimeable number, because it can be changed into a prime (212123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658 + ... + 925.

It is an arithmetic number, because the mean of its divisors is an integer number (40392).

2²¹²¹²² is an apocalyptic number.

212122 is a deficient number, since it is larger than the sum of its proper divisors (111014).

212122 is a wasteful number, since it uses less digits than its factorization.

212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652.

The product of its digits is 16, while the sum is 10.

The square root of 212122 is about 460.5670418082. The cubic root of 212122 is about 59.6387553290.

Adding to 212122 its reverse (221212), we get a palindrome (433334).

It can be divided in two parts, 21212 and 2, that multiplied together give a palindrome (42424).

The spelling of 212122 in words is "two hundred twelve thousand, one hundred twenty-two", and thus it is an iban number.