2124121420 has 12 divisors (see below), whose sum is σ = 4460655024. Its totient is φ = 849648560.

The previous prime is 2124121409. The next prime is 2124121421. The reversal of 2124121420 is 241214212.

It is not an unprimeable number, because it can be changed into a prime (2124121421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53103016 + ... + 53103055.

It is an arithmetic number, because the mean of its divisors is an integer number (371721252).

Almost surely, 2^2124121420 is an apocalyptic number.

2124121420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2124121420 is an abundant number, since it is smaller than the sum of its proper divisors (2336533604).

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

2124121420 is a wasteful number, since it uses less digits than its factorization.

2124121420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106206080 (or 106206078 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2124121420 is about 46088.1917631838. The cubic root of 2124121420 is about 1285.4635884280.

Adding to 2124121420 its reverse (241214212), we get a palindrome (2365335632).

The spelling of 2124121420 in words is "two billion, one hundred twenty-four million, one hundred twenty-one thousand, four hundred twenty".