211404323020 has 48 divisors (see below), whose sum is σ = 484340564736. Its totient is φ = 76869144000.

The previous prime is 211404322973. The next prime is 211404323051. The reversal of 211404323020 is 20323404112.

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 = 211404322982 and 211404323000.

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, 5134315 + ... + 5175325.

It is an arithmetic number, because the mean of its divisors is an integer number (10090428432).

Almost surely, 2^211404323020 is an apocalyptic number.

211404323020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211404323020 is an abundant number, since it is smaller than the sum of its proper divisors (272936241716).

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

211404323020 is a wasteful number, since it uses less digits than its factorization.

211404323020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64462 (or 64460 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 211404323020 its reverse (20323404112), we get a palindrome (231727727132).

The spelling of 211404323020 in words is "two hundred eleven billion, four hundred four million, three hundred twenty-three thousand, twenty".