222021300 has 108 divisors (see below), whose sum is σ = 672005600. Its totient is φ = 56591040.

The previous prime is 222021281. The next prime is 222021301. The reversal of 222021300 is 3120222.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222021301) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 158001 + ... + 159399.

Almost surely, 2^222021300 is an apocalyptic number.

222021300 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 222021300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336002800).

222021300 is an abundant number, since it is smaller than the sum of its proper divisors (449984300).

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

222021300 is a wasteful number, since it uses less digits than its factorization.

222021300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462 (or 1432 counting only the distinct ones).

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

The square root of 222021300 is about 14900.3791898059. The cubic root of 222021300 is about 605.5242592784.

Adding to 222021300 its reverse (3120222), we get a palindrome (225141522).

The spelling of 222021300 in words is "two hundred twenty-two million, twenty-one thousand, three hundred".