11212213122001 has 8 divisors (see below), whose sum is σ = 11889715377384. Its totient is φ = 10536706456320.

The previous prime is 11212213121999. The next prime is 11212213122023. The reversal of 11212213122001 is 10022131221211.

It can be written as a sum of positive squares in 4 ways, for example, as 3481672373776 + 7730540748225 = 1865924^2 + 2780385^2 .

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 11212213122001 - 2¹ = 11212213121999 is a prime.

It is a super-2 number, since 2×11212213122001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11212213122001.

It is not an unprimeable number, because it can be changed into a prime (11212213122101) 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, 498885850 + ... + 498908323.

It is an arithmetic number, because the mean of its divisors is an integer number (1486214422173).

Almost surely, 2^{11212213122001} is an apocalyptic number.

It is an amenable number.

11212213122001 is a deficient number, since it is larger than the sum of its proper divisors (677502255383).

11212213122001 is an equidigital number, since it uses as much as digits as its factorization.

11212213122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997794851.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11212213122001 its reverse (10022131221211), we get a palindrome (21234344343212).

The spelling of 11212213122001 in words is "eleven trillion, two hundred twelve billion, two hundred thirteen million, one hundred twenty-two thousand, one".