211000221020 has 24 divisors (see below), whose sum is σ = 443109765168. Its totient is φ = 84398316800.

The previous prime is 211000221017. The next prime is 211000221043. The reversal of 211000221020 is 20122000112.

It is a happy number.

211000221020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 211000220992 and 211000221010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1311380 + ... + 1463460.

It is an arithmetic number, because the mean of its divisors is an integer number (18462906882).

Almost surely, 2^211000221020 is an apocalyptic number.

211000221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211000221020 is an abundant number, since it is smaller than the sum of its proper divisors (232109544148).

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

211000221020 is a wasteful number, since it uses less digits than its factorization.

211000221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221461 (or 221459 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 211000221020 its reverse (20122000112), we get a palindrome (231122221132).

The spelling of 211000221020 in words is "two hundred eleven billion, two hundred twenty-one thousand, twenty".