211223002309 has 16 divisors (see below), whose sum is σ = 234588842496. Its totient is φ = 188561505600.

The previous prime is 211223002307. The next prime is 211223002321. The reversal of 211223002309 is 903200322112.

It is a cyclic number.

It is not a de Polignac number, because 211223002309 - 2¹ = 211223002307 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 (211223002307) 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, 147999 + ... + 666595.

It is an arithmetic number, because the mean of its divisors is an integer number (14661802656).

Almost surely, 2^211223002309 is an apocalyptic number.

It is an amenable number.

211223002309 is a deficient number, since it is larger than the sum of its proper divisors (23365840187).

211223002309 is a wasteful number, since it uses less digits than its factorization.

211223002309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519276.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 211223002309 in words is "two hundred eleven billion, two hundred twenty-three million, two thousand, three hundred nine".