2121210212 has 12 divisors (see below), whose sum is σ = 4049583216. Its totient is φ = 964186440.

The previous prime is 2121210211. The next prime is 2121210227. The reversal of 2121210212 is 2120121212.

It is a super-3 number, since 3×2121210212³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121210211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24104618 + ... + 24104705.

It is an arithmetic number, because the mean of its divisors is an integer number (337465268).

Almost surely, 2^2121210212 is an apocalyptic number.

2121210212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121210212 is a deficient number, since it is larger than the sum of its proper divisors (1928373004).

2121210212 is a wasteful number, since it uses less digits than its factorization.

2121210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48209338 (or 48209336 counting only the distinct ones).

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

The square root of 2121210212 is about 46056.5979203849. The cubic root of 2121210212 is about 1284.8760572266.

Adding to 2121210212 its reverse (2120121212), we get a palindrome (4241331424).

The spelling of 2121210212 in words is "two billion, one hundred twenty-one million, two hundred ten thousand, two hundred twelve".