4220161222 has 4 divisors (see below), whose sum is σ = 6330241836. Its totient is φ = 2110080610.

The previous prime is 4220161219. The next prime is 4220161241. The reversal of 4220161222 is 2221610224.

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

It is a super-3 number, since 3×4220161222³ (a number of 30 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 4220161193 and 4220161202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055040304 + ... + 1055040307.

It is an arithmetic number, because the mean of its divisors is an integer number (1582560459).

Almost surely, 2^4220161222 is an apocalyptic number.

4220161222 is a deficient number, since it is larger than the sum of its proper divisors (2110080614).

4220161222 is a wasteful number, since it uses less digits than its factorization.

4220161222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110080613.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 4220161222 is about 64962.7679675058. The cubic root of 4220161222 is about 1616.0061684383.

Adding to 4220161222 its reverse (2221610224), we get a palindrome (6441771446).

The spelling of 4220161222 in words is "four billion, two hundred twenty million, one hundred sixty-one thousand, two hundred twenty-two".