2121243310 has 16 divisors (see below), whose sum is σ = 3984248736. Its totient is φ = 811606048.

The previous prime is 2121243283. The next prime is 2121243331. The reversal of 2121243310 is 133421212.

It is a happy number.

It is a super-2 number, since 2×2121243310² = 8999346360439512200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4611169 + ... + 4611628.

It is an arithmetic number, because the mean of its divisors is an integer number (249015546).

Almost surely, 2^2121243310 is an apocalyptic number.

2121243310 is a deficient number, since it is larger than the sum of its proper divisors (1863005426).

2121243310 is a wasteful number, since it uses less digits than its factorization.

2121243310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9222827.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2121243310 is about 46056.9572377507. The cubic root of 2121243310 is about 1284.8827399851.

Adding to 2121243310 its reverse (133421212), we get a palindrome (2254664522).

The spelling of 2121243310 in words is "two billion, one hundred twenty-one million, two hundred forty-three thousand, three hundred ten".