222121333333 has 2 divisors, whose sum is σ = 222121333334. Its totient is φ = 222121333332.

The previous prime is 222121333303. The next prime is 222121333349. The reversal of 222121333333 is 333333121222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220634999524 + 1486333809 = 469718^2 + 38553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222121333333 is a prime.

222121333333 is a modest number, since divided by 333333 gives 222121 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222121333303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060666666 + 111060666667.

It is an arithmetic number, because the mean of its divisors is an integer number (111060666667).

Almost surely, 2^222121333333 is an apocalyptic number.

It is an amenable number.

222121333333 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121333333 is an equidigital number, since it uses as much as digits as its factorization.

222121333333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 28.

Adding to 222121333333 its reverse (333333121222), we get a palindrome (555454454555).

The spelling of 222121333333 in words is "two hundred twenty-two billion, one hundred twenty-one million, three hundred thirty-three thousand, three hundred thirty-three".