222121124 has 6 divisors (see below), whose sum is σ = 388711974. Its totient is φ = 111060560.

The previous prime is 222121117. The next prime is 222121129. The reversal of 222121124 is 421121222.

222121124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 212634724 + 9486400 = 14582^2 + 3080^2 .

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (222121129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765137 + ... + 27765144.

It is an arithmetic number, because the mean of its divisors is an integer number (64785329).

Almost surely, 2^222121124 is an apocalyptic number.

It is an amenable number.

222121124 is a deficient number, since it is larger than the sum of its proper divisors (166590850).

222121124 is a wasteful number, since it uses less digits than its factorization.

222121124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55530285 (or 55530283 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 222121124 is about 14903.7285267815. The cubic root of 222121124 is about 605.6149965137.

Adding to 222121124 its reverse (421121222), we get a palindrome (643242346).

The spelling of 222121124 in words is "two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-four".