220201002 has 72 divisors (see below), whose sum is σ = 574200900. Its totient is φ = 60738048.

The previous prime is 220200997. The next prime is 220201019. The reversal of 220201002 is 200102022.

It can be written as a sum of positive squares in 2 ways, for example, as 216707841 + 3493161 = 14721^2 + 1869^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21274 + ... + 29882.

Almost surely, 2^220201002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220201002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287100450).

220201002 is an abundant number, since it is smaller than the sum of its proper divisors (353999898).

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

220201002 is a wasteful number, since it uses less digits than its factorization.

220201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8660 (or 8650 counting only the distinct ones).

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

The square root of 220201002 is about 14839.1712032714. The cubic root of 220201002 is about 603.8648678732.

Adding to 220201002 its reverse (200102022), we get a palindrome (420303024).

The spelling of 220201002 in words is "two hundred twenty million, two hundred one thousand, two".