211012111001 has 16 divisors (see below), whose sum is σ = 227356416000. Its totient is φ = 195210866448.

The previous prime is 211012110983. The next prime is 211012111003. The reversal of 211012111001 is 100111210112.

It is a cyclic number.

It is not a de Polignac number, because 211012111001 - 2⁶ = 211012110937 is a prime.

It is a super-2 number, since 2×211012111001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211012111003) 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, 128900 + ... + 662298.

It is an arithmetic number, because the mean of its divisors is an integer number (14209776000).

Almost surely, 2^211012111001 is an apocalyptic number.

It is an amenable number.

211012111001 is a deficient number, since it is larger than the sum of its proper divisors (16344304999).

211012111001 is a wasteful number, since it uses less digits than its factorization.

211012111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533908.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 211012111001 its reverse (100111210112), we get a palindrome (311123321113).

The spelling of 211012111001 in words is "two hundred eleven billion, twelve million, one hundred eleven thousand, one".