1221183223033 has 2 divisors, whose sum is σ = 1221183223034. Its totient is φ = 1221183223032.

The previous prime is 1221183223031. The next prime is 1221183223037. The reversal of 1221183223033 is 3303223811221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 641229389824 + 579953833209 = 800768^2 + 761547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1221183223033 - 2¹ = 1221183223031 is a prime.

Together with 1221183223031, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1221183222986 and 1221183223004.

It is not a weakly prime, because it can be changed into another prime (1221183223031) 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 as a sum of consecutive naturals, namely, 610591611516 + 610591611517.

It is an arithmetic number, because the mean of its divisors is an integer number (610591611517).

Almost surely, 2^{1221183223033} is an apocalyptic number.

It is an amenable number.

1221183223033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221183223033 is an equidigital number, since it uses as much as digits as its factorization.

1221183223033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 1221183223033 in words is "one trillion, two hundred twenty-one billion, one hundred eighty-three million, two hundred twenty-three thousand, thirty-three".