2221700222 has 16 divisors (see below), whose sum is σ = 3847895520. Its totient is φ = 942340608.

The previous prime is 2221700209. The next prime is 2221700227. The reversal of 2221700222 is 2220071222.

2221700222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2221700194 and 2221700203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221700227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816647 + ... + 819362.

It is an arithmetic number, because the mean of its divisors is an integer number (240493470).

Almost surely, 2^2221700222 is an apocalyptic number.

2221700222 is a deficient number, since it is larger than the sum of its proper divisors (1626195298).

2221700222 is a wasteful number, since it uses less digits than its factorization.

2221700222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636115.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 2221700222 is about 47134.9151054714. The cubic root of 2221700222 is about 1304.8536942991.

Adding to 2221700222 its reverse (2220071222), we get a palindrome (4441771444).

The spelling of 2221700222 in words is "two billion, two hundred twenty-one million, seven hundred thousand, two hundred twenty-two".