221323053135 has 16 divisors (see below), whose sum is σ = 354123206784. Its totient is φ = 118036854432.

The previous prime is 221323053131. The next prime is 221323053167. The reversal of 221323053135 is 531350323122.

It is a happy number.

It is not a de Polignac number, because 221323053135 - 2² = 221323053131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221323053131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120744 + ... + 1303346.

It is an arithmetic number, because the mean of its divisors is an integer number (22132700424).

Almost surely, 2^221323053135 is an apocalyptic number.

221323053135 is a deficient number, since it is larger than the sum of its proper divisors (132800153649).

221323053135 is a wasteful number, since it uses less digits than its factorization.

221323053135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263414.

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 221323053135 its reverse (531350323122), we get a palindrome (752673376257).

The spelling of 221323053135 in words is "two hundred twenty-one billion, three hundred twenty-three million, fifty-three thousand, one hundred thirty-five".