222002020 has 12 divisors (see below), whose sum is σ = 466204284. Its totient is φ = 88800800.

The previous prime is 222001987. The next prime is 222002051. The reversal of 222002020 is 20200222.

It can be written as a sum of positive squares in 2 ways, for example, as 123476544 + 98525476 = 11112^2 + 9926^2 .

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 = 222001988 and 222002006.

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 in 3 ways as a sum of consecutive naturals, for example, 5550031 + ... + 5550070.

It is an arithmetic number, because the mean of its divisors is an integer number (38850357).

Almost surely, 2^222002020 is an apocalyptic number.

222002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222002020 is an abundant number, since it is smaller than the sum of its proper divisors (244202264).

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

222002020 is a wasteful number, since it uses less digits than its factorization.

222002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11100110 (or 11100108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 222002020 is about 14899.7322123587. The cubic root of 222002020 is about 605.5067311619.

Adding to 222002020 its reverse (20200222), we get a palindrome (242202242).

The spelling of 222002020 in words is "two hundred twenty-two million, two thousand, twenty".