1221122 has 8 divisors (see below), whose sum is σ = 2093376. Its totient is φ = 523332.

The previous prime is 1221119. The next prime is 1221131. The reversal of 1221122 is 2211221.

It is a happy number.

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

It is a super-2 number, since 2×1221122² = 2982277877768, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43598 + ... + 43625.

It is an arithmetic number, because the mean of its divisors is an integer number (261672).

2^1221122 is an apocalyptic number.

1221122 is a deficient number, since it is larger than the sum of its proper divisors (872254).

1221122 is an equidigital number, since it uses as much as digits as its factorization.

1221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87232.

The product of its digits is 16, while the sum is 11.

The square root of 1221122 is about 1105.0438905311. The cubic root of 1221122 is about 106.8857195454.

Adding to 1221122 its reverse (2211221), we get a palindrome (3432343).

Subtracting 1221122 from its reverse (2211221), we obtain a palindrome (990099).

The spelling of 1221122 in words is "one million, two hundred twenty-one thousand, one hundred twenty-two".