222101020 has 48 divisors (see below), whose sum is σ = 482172768. Its totient is φ = 85881600.

The previous prime is 222101017. The next prime is 222101023. The reversal of 222101020 is 20101222.

It is an interprime number because it is at equal distance from previous prime (222101017) and next prime (222101023).

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 = 222100988 and 222101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222101023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 85582 + ... + 88138.

It is an arithmetic number, because the mean of its divisors is an integer number (10045266).

Almost surely, 2^222101020 is an apocalyptic number.

222101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222101020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241086384).

222101020 is an abundant number, since it is smaller than the sum of its proper divisors (260071748).

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

222101020 is a wasteful number, since it uses less digits than its factorization.

222101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710 (or 2708 counting only the distinct ones).

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

The square root of 222101020 is about 14903.0540494222. The cubic root of 222101020 is about 605.5967247243.

Adding to 222101020 its reverse (20101222), we get a palindrome (242202242).

The spelling of 222101020 in words is "two hundred twenty-two million, one hundred one thousand, twenty".