11212101001 has 16 divisors (see below), whose sum is σ = 12620223360. Its totient is φ = 9898156800.

The previous prime is 11212100993. The next prime is 11212101013. The reversal of 11212101001 is 10010121211.

It is a cyclic number.

It is not a de Polignac number, because 11212101001 - 2³ = 11212100993 is a prime.

It is a super-2 number, since 2×11212101001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11212101071) 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, 139221 + ... + 204466.

It is an arithmetic number, because the mean of its divisors is an integer number (788763960).

Almost surely, 2^11212101001 is an apocalyptic number.

It is an amenable number.

11212101001 is a deficient number, since it is larger than the sum of its proper divisors (1408122359).

11212101001 is a wasteful number, since it uses less digits than its factorization.

11212101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343824.

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

Adding to 11212101001 its reverse (10010121211), we get a palindrome (21222222212).

It can be divided in two parts, 1121210 and 1001, that added together give a palindrome (1122211).

The spelling of 11212101001 in words is "eleven billion, two hundred twelve million, one hundred one thousand, one".