20021202 has 32 divisors (see below), whose sum is σ = 45581760. Its totient is φ = 6510240.

The previous prime is 20021171. The next prime is 20021203. The reversal of 20021202 is 20212002.

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 (20021203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2308 + ... + 6735.

It is an arithmetic number, because the mean of its divisors is an integer number (1424430).

Almost surely, 2^20021202 is an apocalyptic number.

20021202 is an abundant number, since it is smaller than the sum of its proper divisors (25560558).

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

20021202 is a wasteful number, since it uses less digits than its factorization.

20021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9095 (or 9089 counting only the distinct ones).

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

The square root of 20021202 is about 4474.5057827653. The cubic root of 20021202 is about 271.5376462556.

Adding to 20021202 its reverse (20212002), we get a palindrome (40233204).

The spelling of 20021202 in words is "twenty million, twenty-one thousand, two hundred two".