220102312 has 16 divisors (see below), whose sum is σ = 416947860. Its totient is φ = 108916224.

The previous prime is 220102291. The next prime is 220102313. The reversal of 220102312 is 213201022.

It can be written as a sum of positive squares in 2 ways, for example, as 220047556 + 54756 = 14834^2 + 234^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220102292 and 220102301.

It is not an unprimeable number, because it can be changed into a prime (220102313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141043 + ... + 142594.

Almost surely, 2^220102312 is an apocalyptic number.

It is an amenable number.

220102312 is a deficient number, since it is larger than the sum of its proper divisors (196845548).

220102312 is a wasteful number, since it uses less digits than its factorization.

220102312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283740 (or 283736 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 220102312 is about 14835.8455101150. The cubic root of 220102312 is about 603.7746407191.

Adding to 220102312 its reverse (213201022), we get a palindrome (433303334).

The spelling of 220102312 in words is "two hundred twenty million, one hundred two thousand, three hundred twelve".