211002011020 has 24 divisors (see below), whose sum is σ = 443186400384. Its totient is φ = 84385151616.

The previous prime is 211002011009. The next prime is 211002011069. The reversal of 211002011020 is 20110200112.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 211002010988 and 211002011006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867457 + ... + 1083736.

It is an arithmetic number, because the mean of its divisors is an integer number (18466100016).

Almost surely, 2^211002011020 is an apocalyptic number.

211002011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211002011020 is an abundant number, since it is smaller than the sum of its proper divisors (232184389364).

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

211002011020 is a wasteful number, since it uses less digits than its factorization.

211002011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956609 (or 1956607 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211002011020 its reverse (20110200112), we get a palindrome (231112211132).

The spelling of 211002011020 in words is "two hundred eleven billion, two million, eleven thousand, twenty".