2121025837 has 8 divisors (see below), whose sum is σ = 2424380672. Its totient is φ = 1817758800.

The previous prime is 2121025811. The next prime is 2121025843. The reversal of 2121025837 is 7385201212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121025837 - 2²³ = 2112637229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121025799 and 2121025808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121025807) 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 7 ways as a sum of consecutive naturals, for example, 42412 + ... + 77722.

It is an arithmetic number, because the mean of its divisors is an integer number (303047584).

Almost surely, 2^2121025837 is an apocalyptic number.

It is an amenable number.

2121025837 is a deficient number, since it is larger than the sum of its proper divisors (303354835).

2121025837 is an equidigital number, since it uses as much as digits as its factorization.

2121025837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43899.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 2121025837 is about 46054.5962635653. The cubic root of 2121025837 is about 1284.8388291251.

The spelling of 2121025837 in words is "two billion, one hundred twenty-one million, twenty-five thousand, eight hundred thirty-seven".