2121243410 has 128 divisors (see below), whose sum is σ = 4774775040. Its totient is φ = 667008000.

The previous prime is 2121243409. The next prime is 2121243413. The reversal of 2121243410 is 143421212.

It is not an unprimeable number, because it can be changed into a prime (2121243413) 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 63 ways as a sum of consecutive naturals, for example, 2743784 + ... + 2744556.

It is an arithmetic number, because the mean of its divisors is an integer number (37302930).

Almost surely, 2^2121243410 is an apocalyptic number.

2121243410 is an abundant number, since it is smaller than the sum of its proper divisors (2653531630).

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

2121243410 is a wasteful number, since it uses less digits than its factorization.

2121243410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2121243410 is about 46056.9583233630. The cubic root of 2121243410 is about 1284.8827601758.

Adding to 2121243410 its reverse (143421212), we get a palindrome (2264664622).

The spelling of 2121243410 in words is "two billion, one hundred twenty-one million, two hundred forty-three thousand, four hundred ten".