221133052253 has 4 divisors (see below), whose sum is σ = 221212342620. Its totient is φ = 221053761888.

The previous prime is 221133052241. The next prime is 221133052267. The reversal of 221133052253 is 352250331122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 177913552804 + 43219499449 = 421798^2 + 207893^2 .

It is a cyclic number.

It is not a de Polignac number, because 221133052253 - 2⁴ = 221133052237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221133058253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39641000 + ... + 39646577.

It is an arithmetic number, because the mean of its divisors is an integer number (55303085655).

Almost surely, 2^221133052253 is an apocalyptic number.

It is an amenable number.

221133052253 is a deficient number, since it is larger than the sum of its proper divisors (79290367).

221133052253 is an equidigital number, since it uses as much as digits as its factorization.

221133052253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79290366.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 221133052253 its reverse (352250331122), we get a palindrome (573383383375).

The spelling of 221133052253 in words is "two hundred twenty-one billion, one hundred thirty-three million, fifty-two thousand, two hundred fifty-three".