2121955382 has 16 divisors (see below), whose sum is σ = 3244438800. Its totient is φ = 1040493792.

The previous prime is 2121955373. The next prime is 2121955393. The reversal of 2121955382 is 2835591212.

It is a congruent number.

It is an unprimeable number.

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, 458693 + ... + 463295.

It is an arithmetic number, because the mean of its divisors is an integer number (202777425).

Almost surely, 2^2121955382 is an apocalyptic number.

2121955382 is a deficient number, since it is larger than the sum of its proper divisors (1122483418).

2121955382 is a wasteful number, since it uses less digits than its factorization.

2121955382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9007.

The product of its digits is 43200, while the sum is 38.

The square root of 2121955382 is about 46064.6869304460. The cubic root of 2121955382 is about 1285.0264963474.

The spelling of 2121955382 in words is "two billion, one hundred twenty-one million, nine hundred fifty-five thousand, three hundred eighty-two".