222230422121 has 4 divisors (see below), whose sum is σ = 222241588692. Its totient is φ = 222219255552.

The previous prime is 222230422081. The next prime is 222230422151. The reversal of 222230422121 is 121224032222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121224032222 = 2 ⋅60612016111.

It can be written as a sum of positive squares in 2 ways, for example, as 113222155225 + 109008266896 = 336485^2 + 330164^2 .

It is a cyclic number.

It is not a de Polignac number, because 222230422121 - 2¹⁰ = 222230421097 is a prime.

It is a super-2 number, since 2×222230422121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222230422151) 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 3 ways as a sum of consecutive naturals, for example, 5553380 + ... + 5593253.

It is an arithmetic number, because the mean of its divisors is an integer number (55560397173).

Almost surely, 2^222230422121 is an apocalyptic number.

It is an amenable number.

222230422121 is a deficient number, since it is larger than the sum of its proper divisors (11166571).

222230422121 is a wasteful number, since it uses less digits than its factorization.

222230422121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11166570.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 222230422121 its reverse (121224032222), we get a palindrome (343454454343).

The spelling of 222230422121 in words is "two hundred twenty-two billion, two hundred thirty million, four hundred twenty-two thousand, one hundred twenty-one".