2281221776 has 20 divisors (see below), whose sum is σ = 4652492400. Its totient is φ = 1080578592.

The previous prime is 2281221773. The next prime is 2281221797. The reversal of 2281221776 is 6771221822.

2281221776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (2281221773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3751706 + ... + 3752313.

It is an arithmetic number, because the mean of its divisors is an integer number (232624620).

Almost surely, 2^2281221776 is an apocalyptic number.

It is an amenable number.

2281221776 is an abundant number, since it is smaller than the sum of its proper divisors (2371270624).

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

2281221776 is a wasteful number, since it uses less digits than its factorization.

2281221776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7504046 (or 7504040 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 2281221776 is about 47762.1374731073. The cubic root of 2281221776 is about 1316.4039280761.

The spelling of 2281221776 in words is "two billion, two hundred eighty-one million, two hundred twenty-one thousand, seven hundred seventy-six".