222421321300 has 36 divisors (see below), whose sum is σ = 487433044476. Its totient is φ = 88087648000.

The previous prime is 222421321273. The next prime is 222421321307. The reversal of 222421321300 is 3123124222.

It can be written as a sum of positive squares in 6 ways, for example, as 4037077444 + 218384243856 = 63538^2 + 467316^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222421321307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11000857 + ... + 11021056.

It is an arithmetic number, because the mean of its divisors is an integer number (13539806791).

Almost surely, 2^222421321300 is an apocalyptic number.

222421321300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222421321300 is an abundant number, since it is smaller than the sum of its proper divisors (265011723176).

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

222421321300 is a wasteful number, since it uses less digits than its factorization.

222421321300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22022028 (or 22022021 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 222421321300 its reverse (3123124222), we get a palindrome (225544445522).

The spelling of 222421321300 in words is "two hundred twenty-two billion, four hundred twenty-one million, three hundred twenty-one thousand, three hundred".