1221021222033 has 8 divisors (see below), whose sum is σ = 1630040695200. Its totient is φ = 813007948448.

The previous prime is 1221021222019. The next prime is 1221021222041. The reversal of 1221021222033 is 3302221201221.

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 1221021222033 - 2²⁴ = 1221004444817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221021221033) 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, 251547063 + ... + 251551916.

It is an arithmetic number, because the mean of its divisors is an integer number (203755086900).

Almost surely, 2^{1221021222033} is an apocalyptic number.

It is an amenable number.

1221021222033 is a deficient number, since it is larger than the sum of its proper divisors (409019473167).

1221021222033 is an equidigital number, since it uses as much as digits as its factorization.

1221021222033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503099791.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1221021222033 its reverse (3302221201221), we get a palindrome (4523242423254).

The spelling of 1221021222033 in words is "one trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty-two thousand, thirty-three".