211200001002 has 24 divisors (see below), whose sum is σ = 459090567936. Its totient is φ = 70170682536.

The previous prime is 211200000983. The next prime is 211200001003. The reversal of 211200001002 is 200100002112.

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

It is not an unprimeable number, because it can be changed into a prime (211200001003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19104138 + ... + 19115189.

It is an arithmetic number, because the mean of its divisors is an integer number (19128773664).

Almost surely, 2^211200001002 is an apocalyptic number.

211200001002 is an abundant number, since it is smaller than the sum of its proper divisors (247890566934).

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

211200001002 is a wasteful number, since it uses less digits than its factorization.

211200001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38219642 (or 38219639 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 211200001002 its reverse (200100002112), we get a palindrome (411300003114).

The spelling of 211200001002 in words is "two hundred eleven billion, two hundred million, one thousand, two".