222031020 has 24 divisors (see below), whose sum is σ = 621687024. Its totient is φ = 59208256.

The previous prime is 222031013. The next prime is 222031049. The reversal of 222031020 is 20130222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 222030987 and 222031005.

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 7 ways as a sum of consecutive naturals, for example, 1850199 + ... + 1850318.

It is an arithmetic number, because the mean of its divisors is an integer number (25903626).

Almost surely, 2^222031020 is an apocalyptic number.

222031020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222031020 is an abundant number, since it is smaller than the sum of its proper divisors (399656004).

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

222031020 is a wasteful number, since it uses less digits than its factorization.

222031020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700529 (or 3700527 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 222031020 is about 14900.7053524321. The cubic root of 222031020 is about 605.5330956827.

Adding to 222031020 its reverse (20130222), we get a palindrome (242161242).

The spelling of 222031020 in words is "two hundred twenty-two million, thirty-one thousand, twenty".