2121010202 has 8 divisors (see below), whose sum is σ = 3368663316. Its totient is φ = 998122432.

The previous prime is 2121010189. The next prime is 2121010211. The reversal of 2121010202 is 2020101212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2099564041 + 21446161 = 45821^2 + 4631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31191293 + ... + 31191360.

Almost surely, 2^2121010202 is an apocalyptic number.

2121010202 is a deficient number, since it is larger than the sum of its proper divisors (1247653114).

2121010202 is a wasteful number, since it uses less digits than its factorization.

2121010202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62382672.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2121010202 is about 46054.4265190655. The cubic root of 2121010202 is about 1284.8356720829.

Adding to 2121010202 its reverse (2020101212), we get a palindrome (4141111414).

It can be divided in two parts, 2121010 and 202, that added together give a palindrome (2121212).

The spelling of 2121010202 in words is "two billion, one hundred twenty-one million, ten thousand, two hundred two".