211331132320 has 96 divisors (see below), whose sum is σ = 622466280576. Its totient is φ = 65869440000.

The previous prime is 211331132273. The next prime is 211331132351. The reversal of 211331132320 is 23231133112.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 211331132291 and 211331132300.

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, 8564431 + ... + 8589070.

It is an arithmetic number, because the mean of its divisors is an integer number (6484023756).

Almost surely, 2^211331132320 is an apocalyptic number.

211331132320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211331132320 is an abundant number, since it is smaller than the sum of its proper divisors (411135148256).

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

211331132320 is a wasteful number, since it uses less digits than its factorization.

211331132320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17153534 (or 17153526 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 211331132320 its reverse (23231133112), we get a palindrome (234562265432).

The spelling of 211331132320 in words is "two hundred eleven billion, three hundred thirty-one million, one hundred thirty-two thousand, three hundred twenty".