211023120 has 320 divisors, whose sum is σ = 859944960. Its totient is φ = 41472000.

The previous prime is 211023119. The next prime is 211023121. The reversal of 211023120 is 21320112.

It is an interprime number because it is at equal distance from previous prime (211023119) and next prime (211023121).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 211023096 and 211023105.

It is not an unprimeable number, because it can be changed into a prime (211023121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 350820 + ... + 351420.

It is an arithmetic number, because the mean of its divisors is an integer number (2687328).

Almost surely, 2^211023120 is an apocalyptic number.

211023120 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 211023120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429972480).

211023120 is an abundant number, since it is smaller than the sum of its proper divisors (648921840).

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

211023120 is a wasteful number, since it uses less digits than its factorization.

211023120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 211023120 is about 14526.6348477547. The cubic root of 211023120 is about 595.3559247951.

Adding to 211023120 its reverse (21320112), we get a palindrome (232343232).

The spelling of 211023120 in words is "two hundred eleven million, twenty-three thousand, one hundred twenty".