2121000126 has 16 divisors (see below), whose sum is σ = 4848000384. Its totient is φ = 606000024.

The previous prime is 2121000113. The next prime is 2121000127. The reversal of 2121000126 is 6210001212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121000127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25249960 + ... + 25250043.

It is an arithmetic number, because the mean of its divisors is an integer number (303000024).

Almost surely, 2^2121000126 is an apocalyptic number.

2121000126 is an abundant number, since it is smaller than the sum of its proper divisors (2727000258).

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

2121000126 is a wasteful number, since it uses less digits than its factorization.

2121000126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50500015.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2121000126 is about 46054.3171266278. The cubic root of 2121000126 is about 1284.8336375139.

Adding to 2121000126 its reverse (6210001212), we get a palindrome (8331001338).

The spelling of 2121000126 in words is "two billion, one hundred twenty-one million, one hundred twenty-six", and thus it is an aban number.