211223033009 has 8 divisors (see below), whose sum is σ = 212681828160. Its totient is φ = 209765673936.

The previous prime is 211223032991. The next prime is 211223033017. The reversal of 211223033009 is 900330322112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211223033009 is a prime.

It is a super-2 number, since 2×211223033009² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211223033039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62999 + ... + 653004.

It is an arithmetic number, because the mean of its divisors is an integer number (26585228520).

Almost surely, 2^211223033009 is an apocalyptic number.

It is an amenable number.

211223033009 is a deficient number, since it is larger than the sum of its proper divisors (1458795151).

211223033009 is a wasteful number, since it uses less digits than its factorization.

211223033009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718039.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 211223033009 in words is "two hundred eleven billion, two hundred twenty-three million, thirty-three thousand, nine".