211200101001 has 32 divisors (see below), whose sum is σ = 345698392320. Its totient is φ = 126756064512.

The previous prime is 211200100963. The next prime is 211200101053. The reversal of 211200101001 is 100101002112.

It is a happy number.

It is not a de Polignac number, because 211200101001 - 2⁷ = 211200100873 is a prime.

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 (211200101701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9992290 + ... + 10013403.

It is an arithmetic number, because the mean of its divisors is an integer number (10803074760).

Almost surely, 2^211200101001 is an apocalyptic number.

It is an amenable number.

211200101001 is a deficient number, since it is larger than the sum of its proper divisors (134498291319).

211200101001 is a wasteful number, since it uses less digits than its factorization.

211200101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20005742 (or 20005736 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 211200101001 its reverse (100101002112), we get a palindrome (311301103113).

The spelling of 211200101001 in words is "two hundred eleven billion, two hundred million, one hundred one thousand, one".