211003020 has 72 divisors (see below), whose sum is σ = 641453904. Its totient is φ = 56143488.

The previous prime is 211002949. The next prime is 211003027. The reversal of 211003020 is 20300112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 211002993 and 211003011.

It is not an unprimeable number, because it can be changed into a prime (211003027) 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 23 ways as a sum of consecutive naturals, for example, 104662 + ... + 106658.

It is an arithmetic number, because the mean of its divisors is an integer number (8909082).

Almost surely, 2^211003020 is an apocalyptic number.

211003020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211003020 is an abundant number, since it is smaller than the sum of its proper divisors (430450884).

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

211003020 is a wasteful number, since it uses less digits than its factorization.

211003020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599 (or 2594 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 211003020 is about 14525.9429986490. The cubic root of 211003020 is about 595.3370215993.

Adding to 211003020 its reverse (20300112), we get a palindrome (231303132).

The spelling of 211003020 in words is "two hundred eleven million, three thousand, twenty".