221214220133 has 4 divisors (see below), whose sum is σ = 230832229728. Its totient is φ = 211596210540.

The previous prime is 221214220109. The next prime is 221214220147. The reversal of 221214220133 is 331022412122.

221214220133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221214220133 - 2¹² = 221214216037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 9618009571 = 221214220133 / (2 + 2 + 1 + 2 + 1 + 4 + 2 + 2 + 0 + 1 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221214220099 and 221214220108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221214220163) 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 3 ways as a sum of consecutive naturals, for example, 4809004763 + ... + 4809004808.

It is an arithmetic number, because the mean of its divisors is an integer number (57708057432).

Almost surely, 2^221214220133 is an apocalyptic number.

221214220133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221214220133 is a deficient number, since it is larger than the sum of its proper divisors (9618009595).

221214220133 is an equidigital number, since it uses as much as digits as its factorization.

221214220133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9618009594.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221214220133 its reverse (331022412122), we get a palindrome (552236632255).

The spelling of 221214220133 in words is "two hundred twenty-one billion, two hundred fourteen million, two hundred twenty thousand, one hundred thirty-three".