222020577 has 6 divisors (see below), whose sum is σ = 320696402. Its totient is φ = 148013712.

The previous prime is 222020563. The next prime is 222020671. The reversal of 222020577 is 775020222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 210569121 + 11451456 = 14511^2 + 3384^2 .

It is not a de Polignac number, because 222020577 - 2²⁴ = 205243361 is a prime.

It is a super-2 number, since 2×222020577² = 98586273222825858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222020577.

It is not an unprimeable number, because it can be changed into a prime (222020537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12334468 + ... + 12334485.

Almost surely, 2^222020577 is an apocalyptic number.

It is an amenable number.

222020577 is a deficient number, since it is larger than the sum of its proper divisors (98675825).

222020577 is a wasteful number, since it uses less digits than its factorization.

222020577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24668959 (or 24668956 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 222020577 is about 14900.3549286586. The cubic root of 222020577 is about 605.5236019924.

Adding to 222020577 its reverse (775020222), we get a palindrome (997040799).

The spelling of 222020577 in words is "two hundred twenty-two million, twenty thousand, five hundred seventy-seven".