1221223210033 has 8 divisors (see below), whose sum is σ = 1242210549888. Its totient is φ = 1200385246704.

The previous prime is 1221223209911. The next prime is 1221223210087. The reversal of 1221223210033 is 3300123221221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221223210033 is a prime.

It is a super-2 number, since 2×1221223210033² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221223209986 and 1221223210013.

It is not an unprimeable number, because it can be changed into a prime (1221223250033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37327641 + ... + 37360342.

It is an arithmetic number, because the mean of its divisors is an integer number (155276318736).

Almost surely, 2^{1221223210033} is an apocalyptic number.

It is an amenable number.

1221223210033 is a deficient number, since it is larger than the sum of its proper divisors (20987339855).

1221223210033 is an equidigital number, since it uses as much as digits as its factorization.

1221223210033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74688263.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1221223210033 its reverse (3300123221221), we get a palindrome (4521346431254).

The spelling of 1221223210033 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-three million, two hundred ten thousand, thirty-three".