221132212313 has 16 divisors (see below), whose sum is σ = 228937847040. Its totient is φ = 213442944000.

The previous prime is 221132212309. The next prime is 221132212339. The reversal of 221132212313 is 313212231122.

It is a cyclic number.

It is not a de Polignac number, because 221132212313 - 2² = 221132212309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221132212303) 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, 14782988 + ... + 14797938.

It is an arithmetic number, because the mean of its divisors is an integer number (14308615440).

Almost surely, 2^221132212313 is an apocalyptic number.

It is an amenable number.

221132212313 is a deficient number, since it is larger than the sum of its proper divisors (7805634727).

221132212313 is a wasteful number, since it uses less digits than its factorization.

221132212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18808.

The product of its digits is 864, while the sum is 23.

Adding to 221132212313 its reverse (313212231122), we get a palindrome (534344443435).

The spelling of 221132212313 in words is "two hundred twenty-one billion, one hundred thirty-two million, two hundred twelve thousand, three hundred thirteen".