220102002 has 16 divisors (see below), whose sum is σ = 489115680. Its totient is φ = 73367316.

The previous prime is 220101989. The next prime is 220102007. The reversal of 220102002 is 200201022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (220102007) by changing a digit.

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, 2037928 + ... + 2038035.

It is an arithmetic number, because the mean of its divisors is an integer number (30569730).

Almost surely, 2^220102002 is an apocalyptic number.

220102002 is an abundant number, since it is smaller than the sum of its proper divisors (269013678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220102002 is a wasteful number, since it uses less digits than its factorization.

220102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075974 (or 4075968 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 220102002 is about 14835.8350624426. The cubic root of 220102002 is about 603.7743572597.

Adding to 220102002 its reverse (200201022), we get a palindrome (420303024).

The spelling of 220102002 in words is "two hundred twenty million, one hundred two thousand, two".