211411321020 has 72 divisors (see below), whose sum is σ = 679003429104. Its totient is φ = 53060095488.

The previous prime is 211411321013. The next prime is 211411321039. The reversal of 211411321020 is 20123114112.

211411321020 is a `hidden beast` number, since 21 + 1 + 411 + 3 + 210 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211411320984 and 211411321002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34541274 + ... + 34547393.

It is an arithmetic number, because the mean of its divisors is an integer number (9430603182).

Almost surely, 2^211411321020 is an apocalyptic number.

211411321020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211411321020 is an abundant number, since it is smaller than the sum of its proper divisors (467592108084).

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

211411321020 is a wasteful number, since it uses less digits than its factorization.

211411321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69088699 (or 69088694 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211411321020 its reverse (20123114112), we get a palindrome (231534435132).

The spelling of 211411321020 in words is "two hundred eleven billion, four hundred eleven million, three hundred twenty-one thousand, twenty".