222021210120 has 256 divisors, whose sum is σ = 700973844480. Its totient is φ = 56186265600.

The previous prime is 222021210107. The next prime is 222021210121. The reversal of 222021210120 is 21012120222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 222021210120.

It is not an unprimeable number, because it can be changed into a prime (222021210121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49150102 + ... + 49154618.

It is an arithmetic number, because the mean of its divisors is an integer number (2738179080).

Almost surely, 2^222021210120 is an apocalyptic number.

222021210120 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 222021210120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350486922240).

222021210120 is an abundant number, since it is smaller than the sum of its proper divisors (478952634360).

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

222021210120 is a wasteful number, since it uses less digits than its factorization.

222021210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816 (or 4812 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222021210120 its reverse (21012120222), we get a palindrome (243033330342).

The spelling of 222021210120 in words is "two hundred twenty-two billion, twenty-one million, two hundred ten thousand, one hundred twenty".