222110020 has 36 divisors (see below), whose sum is σ = 512694252. Its totient is φ = 80766400.

The previous prime is 222109991. The next prime is 222110027. The reversal of 222110020 is 20011222.

222110020 = 1545² + 1546² + ... + 1632².

It can be written as a sum of positive squares in 2 ways, for example, as 72488196 + 149621824 = 8514^2 + 12232^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 222109979 and 222110006.

It is not an unprimeable number, because it can be changed into a prime (222110027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43471 + ... + 48310.

It is an arithmetic number, because the mean of its divisors is an integer number (14241507).

Almost surely, 2^222110020 is an apocalyptic number.

222110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222110020 is an abundant number, since it is smaller than the sum of its proper divisors (290584232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222110020 is a wasteful number, since it uses less digits than its factorization.

222110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91812 (or 91799 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 222110020 is about 14903.3559978952. The cubic root of 222110020 is about 605.6049046310.

Adding to 222110020 its reverse (20011222), we get a palindrome (242121242).

The spelling of 222110020 in words is "two hundred twenty-two million, one hundred ten thousand, twenty".