222400543300 has 144 divisors (see below), whose sum is σ = 550824276240. Its totient is φ = 77213859840.

The previous prime is 222400543273. The next prime is 222400543327. The reversal of 222400543300 is 3345004222.

It is an interprime number because it is at equal distance from previous prime (222400543273) and next prime (222400543327).

It can be written as a sum of positive squares in 24 ways, for example, as 116536207876 + 105864335424 = 341374^2 + 325368^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26891566 + ... + 26899834.

It is an arithmetic number, because the mean of its divisors is an integer number (3825168585).

Almost surely, 2^222400543300 is an apocalyptic number.

222400543300 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 222400543300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275412138120).

222400543300 is an abundant number, since it is smaller than the sum of its proper divisors (328423732940).

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

222400543300 is a wasteful number, since it uses less digits than its factorization.

222400543300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9530 (or 9523 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 222400543300 its reverse (3345004222), we get a palindrome (225745547522).

The spelling of 222400543300 in words is "two hundred twenty-two billion, four hundred million, five hundred forty-three thousand, three hundred".