211112001001 has 16 divisors (see below), whose sum is σ = 232257744000. Its totient is φ = 191878344240.

The previous prime is 211112000989. The next prime is 211112001013. The reversal of 211112001001 is 100100211112.

It is an interprime number because it is at equal distance from previous prime (211112000989) and next prime (211112001013).

It is not a de Polignac number, because 211112001001 - 2⁵ = 211112000969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211112001101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7278075 + ... + 7307023.

It is an arithmetic number, because the mean of its divisors is an integer number (14516109000).

Almost surely, 2^211112001001 is an apocalyptic number.

It is an amenable number.

211112001001 is a deficient number, since it is larger than the sum of its proper divisors (21145742999).

211112001001 is an equidigital number, since it uses as much as digits as its factorization.

211112001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34461 (or 34439 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 211112001001 its reverse (100100211112), we get a palindrome (311212212113).

The spelling of 211112001001 in words is "two hundred eleven billion, one hundred twelve million, one thousand, one".