211404012320 has 48 divisors (see below), whose sum is σ = 499547865600. Its totient is φ = 84543677184.

The previous prime is 211404012293. The next prime is 211404012349. The reversal of 211404012320 is 23210404112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 211404012292 and 211404012301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630179 + ... + 905501.

It is an arithmetic number, because the mean of its divisors is an integer number (10407247200).

Almost surely, 2^211404012320 is an apocalyptic number.

211404012320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211404012320 is an abundant number, since it is smaller than the sum of its proper divisors (288143853280).

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

211404012320 is a wasteful number, since it uses less digits than its factorization.

211404012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280137 (or 280129 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 211404012320 its reverse (23210404112), we get a palindrome (234614416432).

The spelling of 211404012320 in words is "two hundred eleven billion, four hundred four million, twelve thousand, three hundred twenty".