222331112100121 has 4 divisors (see below), whose sum is σ = 222428072901412. Its totient is φ = 222234151298832.

The previous prime is 222331112100113. The next prime is 222331112100191. The reversal of 222331112100121 is 121001211133222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93877903061721 + 128453209038400 = 9689061^2 + 11333720^2 .

It is a cyclic number.

It is not a de Polignac number, because 222331112100121 - 2³ = 222331112100113 is a prime.

It is a super-2 number, since 2×222331112100121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222331112100092 and 222331112100101.

It is not an unprimeable number, because it can be changed into a prime (222331112100191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48480397206 + ... + 48480401791.

It is an arithmetic number, because the mean of its divisors is an integer number (55607018225353).

Almost surely, 2^{222331112100121} is an apocalyptic number.

It is an amenable number.

222331112100121 is a deficient number, since it is larger than the sum of its proper divisors (96960801291).

222331112100121 is an equidigital number, since it uses as much as digits as its factorization.

222331112100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96960801290.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 222331112100121 its reverse (121001211133222), we get a palindrome (343332323233343).

The spelling of 222331112100121 in words is "two hundred twenty-two trillion, three hundred thirty-one billion, one hundred twelve million, one hundred thousand, one hundred twenty-one".