220444121345 has 16 divisors (see below), whose sum is σ = 315467861760. Its totient is φ = 144589435584.

The previous prime is 220444121333. The next prime is 220444121347. The reversal of 220444121345 is 543121444022.

220444121345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 220444121345 - 2⁴ = 220444121329 is a prime.

It is a super-2 number, since 2×220444121345² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220444121347) 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 15 ways as a sum of consecutive naturals, for example, 136921010 + ... + 136922619.

It is an arithmetic number, because the mean of its divisors is an integer number (19716741360).

Almost surely, 2^220444121345 is an apocalyptic number.

It is an amenable number.

220444121345 is a deficient number, since it is larger than the sum of its proper divisors (95023740415).

220444121345 is a wasteful number, since it uses less digits than its factorization.

220444121345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273843664.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 220444121345 its reverse (543121444022), we get a palindrome (763565565367).

The spelling of 220444121345 in words is "two hundred twenty billion, four hundred forty-four million, one hundred twenty-one thousand, three hundred forty-five".