212221133309 has 24 divisors (see below), whose sum is σ = 227283761088. Its totient is φ = 198108218880.

The previous prime is 212221133303. The next prime is 212221133317. The reversal of 212221133309 is 903331122212.

It is not a de Polignac number, because 212221133309 - 2¹² = 212221129213 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 (212221133303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24538424 + ... + 24547070.

It is an arithmetic number, because the mean of its divisors is an integer number (9470156712).

Almost surely, 2^212221133309 is an apocalyptic number.

It is an amenable number.

212221133309 is a deficient number, since it is larger than the sum of its proper divisors (15062627779).

212221133309 is a wasteful number, since it uses less digits than its factorization.

212221133309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9365 (or 9348 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 212221133309 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred thirty-three thousand, three hundred nine".