211020020 has 12 divisors (see below), whose sum is σ = 443142084. Its totient is φ = 84408000.

The previous prime is 211020001. The next prime is 211020053. The reversal of 211020020 is 20020112.

211020020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 65383396 + 145636624 = 8086^2 + 12068^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5275481 + ... + 5275520.

It is an arithmetic number, because the mean of its divisors is an integer number (36928507).

Almost surely, 2^211020020 is an apocalyptic number.

211020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020020 is an abundant number, since it is smaller than the sum of its proper divisors (232122064).

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

211020020 is a wasteful number, since it uses less digits than its factorization.

211020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10551010 (or 10551008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 211020020 is about 14526.5281468078. The cubic root of 211020020 is about 595.3530094551.

Adding to 211020020 its reverse (20020112), we get a palindrome (231040132).

The spelling of 211020020 in words is "two hundred eleven million, twenty thousand, twenty".