2221017773 has 24 divisors (see below), whose sum is σ = 2475260928. Its totient is φ = 1991164032.

The previous prime is 2221017767. The next prime is 2221017779. The reversal of 2221017773 is 3777101222.

It is an interprime number because it is at equal distance from previous prime (2221017767) and next prime (2221017779).

It is not a de Polignac number, because 2221017773 - 2¹² = 2221013677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221017779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 825236 + ... + 827922.

It is an arithmetic number, because the mean of its divisors is an integer number (103135872).

Almost surely, 2^2221017773 is an apocalyptic number.

It is an amenable number.

2221017773 is a deficient number, since it is larger than the sum of its proper divisors (254243155).

2221017773 is a wasteful number, since it uses less digits than its factorization.

2221017773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853 (or 2840 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 2221017773 is about 47127.6752344098. The cubic root of 2221017773 is about 1304.7200748178.

Adding to 2221017773 its reverse (3777101222), we get a palindrome (5998118995).

The spelling of 2221017773 in words is "two billion, two hundred twenty-one million, seventeen thousand, seven hundred seventy-three".