20100220202 has 4 divisors (see below), whose sum is σ = 30150330306. Its totient is φ = 10050110100.

The previous prime is 20100220201. The next prime is 20100220253. The reversal of 20100220202 is 20202200102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14125084801 + 5975135401 = 118849^2 + 77299^2 .

It is not an unprimeable number, because it can be changed into a prime (20100220201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025055049 + ... + 5025055052.

Almost surely, 2^20100220202 is an apocalyptic number.

20100220202 is a deficient number, since it is larger than the sum of its proper divisors (10050110104).

20100220202 is a wasteful number, since it uses less digits than its factorization.

20100220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050110103.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20100220202 its reverse (20202200102), we get a palindrome (40302420304).

The spelling of 20100220202 in words is "twenty billion, one hundred million, two hundred twenty thousand, two hundred two".