1220138438033 has 4 divisors (see below), whose sum is σ = 1237323486528. Its totient is φ = 1202953389540.

The previous prime is 1220138438009. The next prime is 1220138438093. The reversal of 1220138438033 is 3308348310221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1220138438033 - 2¹⁰ = 1220138437009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220138438003) 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 3 ways as a sum of consecutive naturals, for example, 8592524141 + ... + 8592524282.

It is an arithmetic number, because the mean of its divisors is an integer number (309330871632).

Almost surely, 2^{1220138438033} is an apocalyptic number.

It is an amenable number.

1220138438033 is a deficient number, since it is larger than the sum of its proper divisors (17185048495).

1220138438033 is an equidigital number, since it uses as much as digits as its factorization.

1220138438033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17185048494.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 1220138438033 in words is "one trillion, two hundred twenty billion, one hundred thirty-eight million, four hundred thirty-eight thousand, thirty-three".