12020235555 has 8 divisors (see below), whose sum is σ = 19232376912. Its totient is φ = 6410792288.

The previous prime is 12020235527. The next prime is 12020235581. The reversal of 12020235555 is 55553202021.

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 12020235555 - 2⁷ = 12020235427 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400674504 + ... + 400674533.

It is an arithmetic number, because the mean of its divisors is an integer number (2404047114).

Almost surely, 2^12020235555 is an apocalyptic number.

12020235555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12020235555 is a deficient number, since it is larger than the sum of its proper divisors (7212141357).

12020235555 is an equidigital number, since it uses as much as digits as its factorization.

12020235555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801349045.

The product of its (nonzero) digits is 15000, while the sum is 30.

Adding to 12020235555 its reverse (55553202021), we get a palindrome (67573437576).

The spelling of 12020235555 in words is "twelve billion, twenty million, two hundred thirty-five thousand, five hundred fifty-five".