2121202312 has 32 divisors (see below), whose sum is σ = 4042872000. Its totient is φ = 1043152704.

The previous prime is 2121202297. The next prime is 2121202327. The reversal of 2121202312 is 2132021212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2121202297) and next prime (2121202327).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390189 + ... + 395587.

It is an arithmetic number, because the mean of its divisors is an integer number (126339750).

Almost surely, 2^2121202312 is an apocalyptic number.

It is an amenable number.

2121202312 is a deficient number, since it is larger than the sum of its proper divisors (1921669688).

2121202312 is a wasteful number, since it uses less digits than its factorization.

2121202312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6205 (or 6201 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2121202312 is about 46056.5121562630. The cubic root of 2121202312 is about 1284.8744621414.

Adding to 2121202312 its reverse (2132021212), we get a palindrome (4253223524).

The spelling of 2121202312 in words is "two billion, one hundred twenty-one million, two hundred two thousand, three hundred twelve".