1220555023033 has 4 divisors (see below), whose sum is σ = 1221149547748. Its totient is φ = 1219960498320.

The previous prime is 1220555023027. The next prime is 1220555023043. The reversal of 1220555023033 is 3303205550221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 422412904489 + 798142118544 = 649933^2 + 893388^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220555023033 - 2³⁷ = 1083116069561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220555022986 and 1220555023004.

It is not an unprimeable number, because it can be changed into a prime (1220555023003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297259278 + ... + 297263383.

It is an arithmetic number, because the mean of its divisors is an integer number (305287386937).

Almost surely, 2^{1220555023033} is an apocalyptic number.

It is an amenable number.

1220555023033 is a deficient number, since it is larger than the sum of its proper divisors (594524715).

1220555023033 is an equidigital number, since it uses as much as digits as its factorization.

1220555023033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594524714.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 1220555023033 in words is "one trillion, two hundred twenty billion, five hundred fifty-five million, twenty-three thousand, thirty-three".