2107220645 has 8 divisors (see below), whose sum is σ = 2528923680. Its totient is φ = 1685603920.

The previous prime is 2107220627. The next prime is 2107220651. The reversal of 2107220645 is 5460227012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2107220645 - 2⁶ = 2107220581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60590 + ... + 88800.

It is an arithmetic number, because the mean of its divisors is an integer number (316115460).

Almost surely, 2^2107220645 is an apocalyptic number.

It is an amenable number.

2107220645 is a deficient number, since it is larger than the sum of its proper divisors (421703035).

2107220645 is a wasteful number, since it uses less digits than its factorization.

2107220645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43155.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 2107220645 is about 45904.4730391277. The cubic root of 2107220645 is about 1282.0452014780.

Adding to 2107220645 its reverse (5460227012), we get a palindrome (7567447657).

The spelling of 2107220645 in words is "two billion, one hundred seven million, two hundred twenty thousand, six hundred forty-five".