211202211222009 has 48 divisors (see below), whose sum is σ = 353078542502400. Its totient is φ = 119154581065728.

The previous prime is 211202211222001. The next prime is 211202211222031. The reversal of 211202211222009 is 900222112202112.

211202211222009 is a `hidden beast` number, since 2 + 112 + 0 + 221 + 122 + 200 + 9 = 666.

It is not a de Polignac number, because 211202211222009 - 2³ = 211202211222001 is a prime.

It is a super-2 number, since 2×211202211222009² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211202211222001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126948057 + ... + 128600985.

It is an arithmetic number, because the mean of its divisors is an integer number (7355802968800).

Almost surely, 2^{211202211222009} is an apocalyptic number.

It is an amenable number.

211202211222009 is a deficient number, since it is larger than the sum of its proper divisors (141876331280391).

211202211222009 is a wasteful number, since it uses less digits than its factorization.

211202211222009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678694 (or 1678691 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 211202211222009 in words is "two hundred eleven trillion, two hundred two billion, two hundred eleven million, two hundred twenty-two thousand, nine".