220220109 has 12 divisors (see below), whose sum is σ = 319001436. Its totient is φ = 146395392.

The previous prime is 220220107. The next prime is 220220111. The reversal of 220220109 is 901022022.

It is an interprime number because it is at equal distance from previous prime (220220107) and next prime (220220111).

It can be written as a sum of positive squares in 2 ways, for example, as 95004009 + 125216100 = 9747^2 + 11190^2 .

It is not a de Polignac number, because 220220109 - 2¹ = 220220107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220220091 and 220220100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220220107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31482 + ... + 37835.

It is an arithmetic number, because the mean of its divisors is an integer number (26583453).

Almost surely, 2^220220109 is an apocalyptic number.

It is an amenable number.

220220109 is a deficient number, since it is larger than the sum of its proper divisors (98781327).

220220109 is a wasteful number, since it uses less digits than its factorization.

220220109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69676 (or 69673 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 220220109 is about 14839.8149921082. The cubic root of 220220109 is about 603.8823332983.

The spelling of 220220109 in words is "two hundred twenty million, two hundred twenty thousand, one hundred nine".