1212222 has 16 divisors (see below), whose sum is σ = 2644992. Its totient is φ = 367320.

The previous prime is 1212221. The next prime is 1212227. The reversal of 1212222 is 2222121.

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

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1212198 and 1212207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9118 + ... + 9249.

It is an arithmetic number, because the mean of its divisors is an integer number (165312).

2^1212222 is an apocalyptic number.

1212222 is an abundant number, since it is smaller than the sum of its proper divisors (1432770).

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

1212222 is a wasteful number, since it uses less digits than its factorization.

1212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18383.

The product of its digits is 32, while the sum is 12.

The square root of 1212222 is about 1101.0095367434. The cubic root of 1212222 is about 106.6254115633.

Adding to 1212222 its reverse (2222121), we get a palindrome (3434343).

It can be divided in two parts, 121 and 2222, that multiplied together give a palindrome (268862).

The spelling of 1212222 in words is "one million, two hundred twelve thousand, two hundred twenty-two".