211123231320320 has 144 divisors (see below), whose sum is σ = 558662684670720. Its totient is φ = 75800285184000.

The previous prime is 211123231320289. The next prime is 211123231320347. The reversal of 211123231320320 is 23023132321112.

It is a self number, because there is not a number n which added to its sum of digits gives 211123231320320.

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, 93789881 + ... + 96014520.

It is an arithmetic number, because the mean of its divisors is an integer number (3879601976880).

Almost surely, 2^{211123231320320} is an apocalyptic number.

211123231320320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211123231320320 is an abundant number, since it is smaller than the sum of its proper divisors (347539453350400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211123231320320 is a wasteful number, since it uses less digits than its factorization.

211123231320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189804512 (or 189804498 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 211123231320320 its reverse (23023132321112), we get a palindrome (234146363641432).

The spelling of 211123231320320 in words is "two hundred eleven trillion, one hundred twenty-three billion, two hundred thirty-one million, three hundred twenty thousand, three hundred twenty".