2121212102 has 16 divisors (see below), whose sum is σ = 3289391952. Its totient is φ = 1025256960.

The previous prime is 2121212101. The next prime is 2121212147. The reversal of 2121212102 is 2012121212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121212101) 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 7 ways as a sum of consecutive naturals, for example, 118799 + ... + 135482.

It is an arithmetic number, because the mean of its divisors is an integer number (205586997).

Almost surely, 2^2121212102 is an apocalyptic number.

2121212102 is a deficient number, since it is larger than the sum of its proper divisors (1168179850).

2121212102 is a wasteful number, since it uses less digits than its factorization.

2121212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254423.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2121212102 is about 46056.6184386131. The cubic root of 2121212102 is about 1284.8764388350.

Adding to 2121212102 its reverse (2012121212), we get a palindrome (4133333314).

It can be divided in two parts, 212121210 and 2, that added together give a palindrome (212121212).

The spelling of 2121212102 in words is "two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred two".