211012112009 has 8 divisors (see below), whose sum is σ = 223448359968. Its totient is φ = 198578505280.

The previous prime is 211012111997. The next prime is 211012112041. The reversal of 211012112009 is 900211210112.

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

It is a cyclic number.

It is not a de Polignac number, because 211012112009 - 2¹⁶ = 211012046473 is a prime.

It is a super-2 number, since 2×211012112009² (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 (211612112009) 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, 494627 + ... + 816504.

It is an arithmetic number, because the mean of its divisors is an integer number (27931044996).

Almost surely, 2^211012112009 is an apocalyptic number.

It is an amenable number.

211012112009 is a deficient number, since it is larger than the sum of its proper divisors (12436247959).

211012112009 is a wasteful number, since it uses less digits than its factorization.

211012112009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320615.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 211012112009 in words is "two hundred eleven billion, twelve million, one hundred twelve thousand, nine".