221330001213 has 36 divisors (see below), whose sum is σ = 336608534080. Its totient is φ = 140122171728.

The previous prime is 221330001209. The next prime is 221330001223. The reversal of 221330001213 is 312100033122.

It is not a de Polignac number, because 221330001213 - 2² = 221330001209 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 (221330001223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 494556 + ... + 829002.

Almost surely, 2^221330001213 is an apocalyptic number.

221330001213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221330001213 is a deficient number, since it is larger than the sum of its proper divisors (115278532867).

221330001213 is a wasteful number, since it uses less digits than its factorization.

221330001213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334638 (or 334612 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 221330001213 its reverse (312100033122), we get a palindrome (533430034335).

The spelling of 221330001213 in words is "two hundred twenty-one billion, three hundred thirty million, one thousand, two hundred thirteen".