221213220133 has 8 divisors (see below), whose sum is σ = 223109322752. Its totient is φ = 219319528176.

The previous prime is 221213220131. The next prime is 221213220149. The reversal of 221213220133 is 331022312122.

221213220133 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 a cyclic number.

It is not a de Polignac number, because 221213220133 - 2¹ = 221213220131 is a prime.

It is a super-2 number, since 2×221213220133² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221213220131) 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, 418110 + ... + 785647.

It is an arithmetic number, because the mean of its divisors is an integer number (27888665344).

Almost surely, 2^221213220133 is an apocalyptic number.

It is an amenable number.

221213220133 is a deficient number, since it is larger than the sum of its proper divisors (1896102619).

221213220133 is a wasteful number, since it uses less digits than its factorization.

221213220133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205331.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221213220133 its reverse (331022312122), we get a palindrome (552235532255).

The spelling of 221213220133 in words is "two hundred twenty-one billion, two hundred thirteen million, two hundred twenty thousand, one hundred thirty-three".