222240342130121 has 24 divisors (see below), whose sum is σ = 261067761415944. Its totient is φ = 188621026997760.

The previous prime is 222240342130097. The next prime is 222240342130229. The reversal of 222240342130121 is 121031243042222.

It can be written as a sum of positive squares in 4 ways, for example, as 11834728346896 + 210405613783225 = 3440164^2 + 14505365^2 .

It is not a de Polignac number, because 222240342130121 - 2³⁸ = 221965464223177 is a prime.

It is a super-2 number, since 2×222240342130121² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222240342130421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14002610 + ... + 25309163.

It is an arithmetic number, because the mean of its divisors is an integer number (10877823392331).

Almost surely, 2^{222240342130121} is an apocalyptic number.

It is an amenable number.

222240342130121 is a deficient number, since it is larger than the sum of its proper divisors (38827419285823).

222240342130121 is a wasteful number, since it uses less digits than its factorization.

222240342130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39312921 (or 39312914 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 222240342130121 its reverse (121031243042222), we get a palindrome (343271585172343).

The spelling of 222240342130121 in words is "two hundred twenty-two trillion, two hundred forty billion, three hundred forty-two million, one hundred thirty thousand, one hundred twenty-one".