2056221612 has 60 divisors (see below), whose sum is σ = 5489779680. Its totient is φ = 670819104.

The previous prime is 2056221589. The next prime is 2056221613. The reversal of 2056221612 is 2161226502.

2056221612 is a `hidden beast` number, since 20 + 5 + 6 + 2 + 21 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2056221613) 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 19 ways as a sum of consecutive naturals, for example, 52287 + ... + 82742.

It is an arithmetic number, because the mean of its divisors is an integer number (91496328).

Almost surely, 2^2056221612 is an apocalyptic number.

It is an amenable number.

2056221612 is an abundant number, since it is smaller than the sum of its proper divisors (3433558068).

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

2056221612 is a wasteful number, since it uses less digits than its factorization.

2056221612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135092 (or 135081 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2056221612 is about 45345.5798507418. The cubic root of 2056221612 is about 1271.6179210218.

The spelling of 2056221612 in words is "two billion, fifty-six million, two hundred twenty-one thousand, six hundred twelve".