2121241386 has 16 divisors (see below), whose sum is σ = 4628163168. Its totient is φ = 642800400.

The previous prime is 2121241379. The next prime is 2121241387. The reversal of 2121241386 is 6831421212.

It is not an unprimeable number, because it can be changed into a prime (2121241387) 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, 16069945 + ... + 16070076.

It is an arithmetic number, because the mean of its divisors is an integer number (289260198).

Almost surely, 2^2121241386 is an apocalyptic number.

2121241386 is an abundant number, since it is smaller than the sum of its proper divisors (2506921782).

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

2121241386 is a wasteful number, since it uses less digits than its factorization.

2121241386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32140037.

The product of its digits is 4608, while the sum is 30.

The square root of 2121241386 is about 46056.9363505650. The cubic root of 2121241386 is about 1284.8823515156.

Adding to 2121241386 its reverse (6831421212), we get a palindrome (8952662598).

The spelling of 2121241386 in words is "two billion, one hundred twenty-one million, two hundred forty-one thousand, three hundred eighty-six".