2101020202 has 4 divisors (see below), whose sum is σ = 3151530306. Its totient is φ = 1050510100.

The previous prime is 2101020199. The next prime is 2101020203. The reversal of 2101020202 is 2020201012.

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., 1653316921 + 447703281 = 40661^2 + 21159^2 .

It is not an unprimeable number, because it can be changed into a prime (2101020203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525255049 + ... + 525255052.

Almost surely, 2^2101020202 is an apocalyptic number.

2101020202 is a deficient number, since it is larger than the sum of its proper divisors (1050510104).

2101020202 is a wasteful number, since it uses less digits than its factorization.

2101020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050510103.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2101020202 is about 45836.8869143619. The cubic root of 2101020202 is about 1280.7865043399.

Adding to 2101020202 its reverse (2020201012), we get a palindrome (4121221214).

The spelling of 2101020202 in words is "two billion, one hundred one million, twenty thousand, two hundred two".