211123332120 has 128 divisors (see below), whose sum is σ = 642801781440. Its totient is φ = 55462993920.

The previous prime is 211123332113. The next prime is 211123332149. The reversal of 211123332120 is 21233321112.

It is a super-2 number, since 2×211123332120² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7668780 + ... + 7696260.

Almost surely, 2^211123332120 is an apocalyptic number.

211123332120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211123332120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321400890720).

211123332120 is an abundant number, since it is smaller than the sum of its proper divisors (431678449320).

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

211123332120 is a wasteful number, since it uses less digits than its factorization.

211123332120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28445 (or 28441 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211123332120 its reverse (21233321112), we get a palindrome (232356653232).

The spelling of 211123332120 in words is "two hundred eleven billion, one hundred twenty-three million, three hundred thirty-two thousand, one hundred twenty".