221232235033 has 2 divisors, whose sum is σ = 221232235034. Its totient is φ = 221232235032.

The previous prime is 221232234983. The next prime is 221232235087. The reversal of 221232235033 is 330532232122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179400532249 + 41831702784 = 423557^2 + 204528^2 .

It is a cyclic number.

It is not a de Polignac number, because 221232235033 - 2²⁹ = 220695364121 is a prime.

It is a super-2 number, since 2×221232235033² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221232234992 and 221232235010.

It is not a weakly prime, because it can be changed into another prime (221232235733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110616117516 + 110616117517.

It is an arithmetic number, because the mean of its divisors is an integer number (110616117517).

Almost surely, 2^221232235033 is an apocalyptic number.

It is an amenable number.

221232235033 is a deficient number, since it is larger than the sum of its proper divisors (1).

221232235033 is an equidigital number, since it uses as much as digits as its factorization.

221232235033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 221232235033 its reverse (330532232122), we get a palindrome (551764467155).

The spelling of 221232235033 in words is "two hundred twenty-one billion, two hundred thirty-two million, two hundred thirty-five thousand, thirty-three".