221433122121 has 8 divisors (see below), whose sum is σ = 295295028864. Its totient is φ = 147596648400.

The previous prime is 221433122077. The next prime is 221433122167. The reversal of 221433122121 is 121221334122.

221433122121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221433122121 - 2¹⁹ = 221432597833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221433122091 and 221433122100.

It is not an unprimeable number, because it can be changed into a prime (221433120121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6337930 + ... + 6372771.

It is an arithmetic number, because the mean of its divisors is an integer number (36911878608).

Almost surely, 2^221433122121 is an apocalyptic number.

It is an amenable number.

221433122121 is a deficient number, since it is larger than the sum of its proper divisors (73861906743).

221433122121 is a wasteful number, since it uses less digits than its factorization.

221433122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12716511.

The product of its digits is 1152, while the sum is 24.

Adding to 221433122121 its reverse (121221334122), we get a palindrome (342654456243).

The spelling of 221433122121 in words is "two hundred twenty-one billion, four hundred thirty-three million, one hundred twenty-two thousand, one hundred twenty-one".