1221122033 has 8 divisors (see below), whose sum is σ = 1230906600. Its totient is φ = 1211374080.

The previous prime is 1221122009. The next prime is 1221122059. The reversal of 1221122033 is 3302211221.

It can be written as a sum of positive squares in 4 ways, for example, as 581436769 + 639685264 = 24113^2 + 25292^2 .

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 1221122033 - 2¹⁴ = 1221105649 is a prime.

It is a super-2 number, since 2×1221122033² = 2982278038956106178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1221122083) 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, 59873 + ... + 77633.

It is an arithmetic number, because the mean of its divisors is an integer number (153863325).

Almost surely, 2^1221122033 is an apocalyptic number.

It is an amenable number.

1221122033 is a deficient number, since it is larger than the sum of its proper divisors (9784567).

1221122033 is a wasteful number, since it uses less digits than its factorization.

1221122033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18307.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1221122033 is about 34944.5565574955. The cubic root of 1221122033 is about 1068.8572050822.

Adding to 1221122033 its reverse (3302211221), we get a palindrome (4523333254).

The spelling of 1221122033 in words is "one billion, two hundred twenty-one million, one hundred twenty-two thousand, thirty-three".