211200002020 has 96 divisors (see below), whose sum is σ = 533678987520. Its totient is φ = 68584734720.

The previous prime is 211200001997. The next prime is 211200002081. The reversal of 211200002020 is 20200002112.

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 = 211200001988 and 211200002006.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20426292 + ... + 20436628.

It is an arithmetic number, because the mean of its divisors is an integer number (5559156120).

Almost surely, 2^211200002020 is an apocalyptic number.

211200002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211200002020 is an abundant number, since it is smaller than the sum of its proper divisors (322478985500).

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

211200002020 is a wasteful number, since it uses less digits than its factorization.

211200002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18053 (or 18051 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 211200002020 its reverse (20200002112), we get a palindrome (231400004132).

The spelling of 211200002020 in words is "two hundred eleven billion, two hundred million, two thousand, twenty".