211923100385 has 16 divisors (see below), whose sum is σ = 260277790080. Its totient is φ = 165560129280.

The previous prime is 211923100351. The next prime is 211923100447. The reversal of 211923100385 is 583001329112.

It is not a de Polignac number, because 211923100385 - 2⁶ = 211923100321 is a prime.

It is a super-2 number, since 2×211923100385² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919625 + ... + 1126745.

It is an arithmetic number, because the mean of its divisors is an integer number (16267361880).

Almost surely, 2^211923100385 is an apocalyptic number.

It is an amenable number.

211923100385 is a deficient number, since it is larger than the sum of its proper divisors (48354689695).

211923100385 is a wasteful number, since it uses less digits than its factorization.

211923100385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211928.

The product of its (nonzero) digits is 12960, while the sum is 35.

Adding to 211923100385 its reverse (583001329112), we get a palindrome (794924429497).

The spelling of 211923100385 in words is "two hundred eleven billion, nine hundred twenty-three million, one hundred thousand, three hundred eighty-five".