1122201221 has 8 divisors (see below), whose sum is σ = 1139396544. Its totient is φ = 1105044640.

The previous prime is 1122201167. The next prime is 1122201247. The reversal of 1122201221 is 1221022211.

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

It is a cyclic number.

It is not a de Polignac number, because 1122201221 - 2²² = 1118006917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122201196 and 1122201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122201121) 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, 51626 + ... + 70068.

It is an arithmetic number, because the mean of its divisors is an integer number (142424568).

Almost surely, 2^1122201221 is an apocalyptic number.

It is an amenable number.

1122201221 is a deficient number, since it is larger than the sum of its proper divisors (17195323).

1122201221 is an equidigital number, since it uses as much as digits as its factorization.

1122201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19371.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1122201221 is about 33499.2719473125. The cubic root of 1122201221 is about 1039.1787219926.

Adding to 1122201221 its reverse (1221022211), we get a palindrome (2343223432).

The spelling of 1122201221 in words is "one billion, one hundred twenty-two million, two hundred one thousand, two hundred twenty-one".