2121300412 has 24 divisors (see below), whose sum is σ = 4628292480. Its totient is φ = 826480560.

The previous prime is 2121300371. The next prime is 2121300413. The reversal of 2121300412 is 2140031212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121300413) by changing a digit.

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, 3443362 + ... + 3443977.

It is an arithmetic number, because the mean of its divisors is an integer number (192845520).

Almost surely, 2^2121300412 is an apocalyptic number.

2121300412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121300412 is an abundant number, since it is smaller than the sum of its proper divisors (2506992068).

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

2121300412 is a wasteful number, since it uses less digits than its factorization.

2121300412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6887361 (or 6887359 counting only the distinct ones).

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

The square root of 2121300412 is about 46057.5771399235. The cubic root of 2121300412 is about 1284.8942691852.

Adding to 2121300412 its reverse (2140031212), we get a palindrome (4261331624).

The spelling of 2121300412 in words is "two billion, one hundred twenty-one million, three hundred thousand, four hundred twelve".