2121020202 has 32 divisors (see below), whose sum is σ = 4849426944. Its totient is φ = 605833200.

The previous prime is 2121020201. The next prime is 2121020219. The reversal of 2121020202 is 2020201212.

It is not an unprimeable number, because it can be changed into a prime (2121020201) 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 15 ways as a sum of consecutive naturals, for example, 251677 + ... + 259967.

It is an arithmetic number, because the mean of its divisors is an integer number (151544592).

Almost surely, 2^2121020202 is an apocalyptic number.

2121020202 is an abundant number, since it is smaller than the sum of its proper divisors (2728406742).

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

2121020202 is a wasteful number, since it uses less digits than its factorization.

2121020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14394.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2121020202 is about 46054.5350861346. The cubic root of 2121020202 is about 1284.8376912994.

Adding to 2121020202 its reverse (2020201212), we get a palindrome (4141221414).

The spelling of 2121020202 in words is "two billion, one hundred twenty-one million, twenty thousand, two hundred two".