2221020160056 has 160 divisors (see below), whose sum is σ = 6402860790480. Its totient is φ = 718858022400.

The previous prime is 2221020160013. The next prime is 2221020160067. The reversal of 2221020160056 is 6500610201222.

2221020160056 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 0 + 2 + 0 + 1 + 600 + 56 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5407750 + ... + 5803946.

Almost surely, 2^{2221020160056} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221020160056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3201430395240).

2221020160056 is an abundant number, since it is smaller than the sum of its proper divisors (4181840630424).

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

2221020160056 is a wasteful number, since it uses less digits than its factorization.

2221020160056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396467 (or 396454 counting only the distinct ones).

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

Adding to 2221020160056 its reverse (6500610201222), we get a palindrome (8721630361278).

The spelling of 2221020160056 in words is "two trillion, two hundred twenty-one billion, twenty million, one hundred sixty thousand, fifty-six".