11121111212001 has 8 divisors (see below), whose sum is σ = 16946455180224. Its totient is φ = 6354920692560.

The previous prime is 11121111211979. The next prime is 11121111212033. The reversal of 11121111212001 is 10021211112111.

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

It is not a de Polignac number, because 11121111212001 - 2¹⁴ = 11121111195617 is a prime.

It is a super-2 number, since 2×11121111212001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11121111214001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264788362170 + ... + 264788362211.

It is an arithmetic number, because the mean of its divisors is an integer number (2118306897528).

Almost surely, 2^{11121111212001} is an apocalyptic number.

It is an amenable number.

11121111212001 is a deficient number, since it is larger than the sum of its proper divisors (5825343968223).

11121111212001 is an equidigital number, since it uses as much as digits as its factorization.

11121111212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529576724391.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11121111212001 its reverse (10021211112111), we get a palindrome (21142322324112).

The spelling of 11121111212001 in words is "eleven trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twelve thousand, one".