4220203515145 has 4 divisors (see below), whose sum is σ = 5064244218180. Its totient is φ = 3376162812112.

The previous prime is 4220203515127. The next prime is 4220203515221. The reversal of 4220203515145 is 5415153020224.

It is a happy number.

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 1883671155961 + 2336532359184 = 1372469^2 + 1528572^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220203515145 - 2¹⁷ = 4220203384073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4220203515145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422020351510 + ... + 422020351519.

It is an arithmetic number, because the mean of its divisors is an integer number (1266061054545).

Almost surely, 2^{4220203515145} is an apocalyptic number.

It is an amenable number.

4220203515145 is a deficient number, since it is larger than the sum of its proper divisors (844040703035).

4220203515145 is an equidigital number, since it uses as much as digits as its factorization.

4220203515145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844040703034.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 4220203515145 its reverse (5415153020224), we get a palindrome (9635356535369).

The spelling of 4220203515145 in words is "four trillion, two hundred twenty billion, two hundred three million, five hundred fifteen thousand, one hundred forty-five".