11212021110001 has 8 divisors (see below), whose sum is σ = 11218688178984. Its totient is φ = 11205355524480.

The previous prime is 11212021109987. The next prime is 11212021110233. The reversal of 11212021110001 is 10001112021211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2931577474225 + 8280443635776 = 1712185^2 + 2877576^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11212021110001 - 2⁵ = 11212021109969 is a prime.

It is a super-2 number, since 2×11212021110001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212021110601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14936991 + ... + 15669643.

It is an arithmetic number, because the mean of its divisors is an integer number (1402336022373).

Almost surely, 2^{11212021110001} is an apocalyptic number.

It is an amenable number.

11212021110001 is a deficient number, since it is larger than the sum of its proper divisors (6667068983).

11212021110001 is an equidigital number, since it uses as much as digits as its factorization.

11212021110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741731.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11212021110001 its reverse (10001112021211), we get a palindrome (21213133131212).

The spelling of 11212021110001 in words is "eleven trillion, two hundred twelve billion, twenty-one million, one hundred ten thousand, one".