222020522 has 4 divisors (see below), whose sum is σ = 333030786. Its totient is φ = 111010260.

The previous prime is 222020509. The next prime is 222020531. The reversal of 222020522 is 225020222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 214886281 + 7134241 = 14659^2 + 2671^2 .

It is a super-2 number, since 2×222020522² = 98586224378304968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222020522.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505129 + ... + 55505132.

Almost surely, 2^222020522 is an apocalyptic number.

222020522 is a deficient number, since it is larger than the sum of its proper divisors (111010264).

222020522 is a wasteful number, since it uses less digits than its factorization.

222020522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111010263.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 222020522 is about 14900.3530830648. The cubic root of 222020522 is about 605.5235519913.

Adding to 222020522 its reverse (225020222), we get a palindrome (447040744).

The spelling of 222020522 in words is "two hundred twenty-two million, twenty thousand, five hundred twenty-two".