4221202045 has 4 divisors (see below), whose sum is σ = 5065442460. Its totient is φ = 3376961632.

The previous prime is 4221202033. The next prime is 4221202061. The reversal of 4221202045 is 5402021224.

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 2224631556 + 1996570489 = 47166^2 + 44683^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221202045 - 2⁹ = 4221201533 is a prime.

It is a congruent number.

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, 422120200 + ... + 422120209.

It is an arithmetic number, because the mean of its divisors is an integer number (1266360615).

Almost surely, 2^4221202045 is an apocalyptic number.

It is an amenable number.

4221202045 is a deficient number, since it is larger than the sum of its proper divisors (844240415).

4221202045 is an equidigital number, since it uses as much as digits as its factorization.

4221202045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844240414.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 4221202045 is about 64970.7783930591. The cubic root of 4221202045 is about 1616.1390099770.

Adding to 4221202045 its reverse (5402021224), we get a palindrome (9623223269).

The spelling of 4221202045 in words is "four billion, two hundred twenty-one million, two hundred two thousand, forty-five".