1221333222033 has 16 divisors (see below), whose sum is σ = 1809408528000. Its totient is φ = 814210458480.

The previous prime is 1221333222017. The next prime is 1221333222049. The reversal of 1221333222033 is 3302223331221.

1221333222033 is a `hidden beast` number, since 1 + 2 + 2 + 133 + 322 + 203 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1221333222017) and next prime (1221333222049).

It is not a de Polignac number, because 1221333222033 - 2⁴ = 1221333222017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1221333221988 and 1221333222006.

It is not an unprimeable number, because it can be changed into a prime (1221333227033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1857388 + ... + 2427458.

It is an arithmetic number, because the mean of its divisors is an integer number (113088033000).

Almost surely, 2^{1221333222033} is an apocalyptic number.

It is an amenable number.

1221333222033 is a deficient number, since it is larger than the sum of its proper divisors (588075305967).

1221333222033 is an equidigital number, since it uses as much as digits as its factorization.

1221333222033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649429 (or 649423 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 1221333222033 its reverse (3302223331221), we get a palindrome (4523556553254).

The spelling of 1221333222033 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-three million, two hundred twenty-two thousand, thirty-three".