211123022109 has 16 divisors (see below), whose sum is σ = 283837044288. Its totient is φ = 139580906112.

The previous prime is 211123022087. The next prime is 211123022141. The reversal of 211123022109 is 901220321112.

It is not a de Polignac number, because 211123022109 - 2¹³ = 211123013917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211123022189) 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, 152154 + ... + 667380.

It is an arithmetic number, because the mean of its divisors is an integer number (17739815268).

Almost surely, 2^211123022109 is an apocalyptic number.

It is an amenable number.

211123022109 is a deficient number, since it is larger than the sum of its proper divisors (72714022179).

211123022109 is a wasteful number, since it uses less digits than its factorization.

211123022109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516364.

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 211123022109 in words is "two hundred eleven billion, one hundred twenty-three million, twenty-two thousand, one hundred nine".